Home / 39,307.28-54,245.38-21,402.56

Finding the Fourth Proportional to 39,307.28, 54,245.38 and 21,402.56

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Solution

The fourth proportional to 39,307.28, 54,245.38 and 21,402.56 is: 29,536.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,307.28 : 54,245.38 = 21,402.56 : x
  2. Step 2: Convert to fraction form
    39,307.28/54,245.38 = 21,402.56/x
  3. Step 3: Cross multiply
    39,307.28x = 54,245.38 × 21,402.56
  4. Step 4: Simplify right side
    39,307.28x = 1,160,990,000.17
  5. Step 5: Solve for x
    x = 1,160,990,000.17/39,307.28
  6. Step 6: Final answer
    x = 29,536.26

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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.