Home / 28,148.87-38,845.13-15,402.30

Finding the Fourth Proportional to 28,148.87, 38,845.13 and 15,402.30

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Solution

The fourth proportional to 28,148.87, 38,845.13 and 15,402.30 is: 21,255.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.87 : 38,845.13 = 15,402.30 : x
  2. Step 2: Convert to fraction form
    28,148.87/38,845.13 = 15,402.30/x
  3. Step 3: Cross multiply
    28,148.87x = 38,845.13 × 15,402.30
  4. Step 4: Simplify right side
    28,148.87x = 598,304,268.79
  5. Step 5: Solve for x
    x = 598,304,268.79/28,148.87
  6. Step 6: Final answer
    x = 21,255.01

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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.