Home / 18,678.78-25,776.73-10,612.45

Finding the Fourth Proportional to 18,678.78, 25,776.73 and 10,612.45

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Solution

The fourth proportional to 18,678.78, 25,776.73 and 10,612.45 is: 14,645.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.78 : 25,776.73 = 10,612.45 : x
  2. Step 2: Convert to fraction form
    18,678.78/25,776.73 = 10,612.45/x
  3. Step 3: Cross multiply
    18,678.78x = 25,776.73 × 10,612.45
  4. Step 4: Simplify right side
    18,678.78x = 273,554,284.82
  5. Step 5: Solve for x
    x = 273,554,284.82/18,678.78
  6. Step 6: Final answer
    x = 14,645.19

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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.