Home / 39,306.83-54,242.19-21,401.72

Finding the Fourth Proportional to 39,306.83, 54,242.19 and 21,401.72

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Solution

The fourth proportional to 39,306.83, 54,242.19 and 21,401.72 is: 29,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,306.83 : 54,242.19 = 21,401.72 : x
  2. Step 2: Convert to fraction form
    39,306.83/54,242.19 = 21,401.72/x
  3. Step 3: Cross multiply
    39,306.83x = 54,242.19 × 21,401.72
  4. Step 4: Simplify right side
    39,306.83x = 1,160,875,891.36
  5. Step 5: Solve for x
    x = 1,160,875,891.36/39,306.83
  6. Step 6: Final answer
    x = 29,533.70

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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.