Home / 18,139,277.69-25,032,203.22-9,990,515.69

Finding the Fourth Proportional to 18,139,277.69, 25,032,203.22 and 9,990,515.69

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Solution

The fourth proportional to 18,139,277.69, 25,032,203.22 and 9,990,515.69 is: 13,786,911.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139,277.69 : 25,032,203.22 = 9,990,515.69 : x
  2. Step 2: Convert to fraction form
    18,139,277.69/25,032,203.22 = 9,990,515.69/x
  3. Step 3: Cross multiply
    18,139,277.69x = 25,032,203.22 × 9,990,515.69
  4. Step 4: Simplify right side
    18,139,277.69x = 250,084,619,024,678.50
  5. Step 5: Solve for x
    x = 250,084,619,024,678.50/18,139,277.69
  6. Step 6: Final answer
    x = 13,786,911.66

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.