Home / 18,370.09-25,350.64-9,986.77

Finding the Fourth Proportional to 18,370.09, 25,350.64 and 9,986.77

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Solution

The fourth proportional to 18,370.09, 25,350.64 and 9,986.77 is: 13,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,370.09 : 25,350.64 = 9,986.77 : x
  2. Step 2: Convert to fraction form
    18,370.09/25,350.64 = 9,986.77/x
  3. Step 3: Cross multiply
    18,370.09x = 25,350.64 × 9,986.77
  4. Step 4: Simplify right side
    18,370.09x = 253,171,011.03
  5. Step 5: Solve for x
    x = 253,171,011.03/18,370.09
  6. Step 6: Final answer
    x = 13,781.70

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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.