Home / 18,760.19-28,140.29-5,612.13

Finding the Fourth Proportional to 18,760.19, 28,140.29 and 5,612.13

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Solution

The fourth proportional to 18,760.19, 28,140.29 and 5,612.13 is: 8,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.19 : 28,140.29 = 5,612.13 : x
  2. Step 2: Convert to fraction form
    18,760.19/28,140.29 = 5,612.13/x
  3. Step 3: Cross multiply
    18,760.19x = 28,140.29 × 5,612.13
  4. Step 4: Simplify right side
    18,760.19x = 157,926,937.66
  5. Step 5: Solve for x
    x = 157,926,937.66/18,760.19
  6. Step 6: Final answer
    x = 8,418.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.