Home / 18,943.20-28,344.96-13,402.08

Finding the Fourth Proportional to 18,943.20, 28,344.96 and 13,402.08

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Solution

The fourth proportional to 18,943.20, 28,344.96 and 13,402.08 is: 20,053.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.20 : 28,344.96 = 13,402.08 : x
  2. Step 2: Convert to fraction form
    18,943.20/28,344.96 = 13,402.08/x
  3. Step 3: Cross multiply
    18,943.20x = 28,344.96 × 13,402.08
  4. Step 4: Simplify right side
    18,943.20x = 379,881,421.52
  5. Step 5: Solve for x
    x = 379,881,421.52/18,943.20
  6. Step 6: Final answer
    x = 20,053.71

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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.