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Finding the Fourth Proportional to 39,297.71, 54,230.85 and 21,392.85

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Solution

The fourth proportional to 39,297.71, 54,230.85 and 21,392.85 is: 29,522.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,297.71 : 54,230.85 = 21,392.85 : x
  2. Step 2: Convert to fraction form
    39,297.71/54,230.85 = 21,392.85/x
  3. Step 3: Cross multiply
    39,297.71x = 54,230.85 × 21,392.85
  4. Step 4: Simplify right side
    39,297.71x = 1,160,152,332.46
  5. Step 5: Solve for x
    x = 1,160,152,332.46/39,297.71
  6. Step 6: Final answer
    x = 29,522.14

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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.