Home / 39,210.60-54,110-21,305.92

Finding the Fourth Proportional to 39,210.60, 54,110 and 21,305.92

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Solution

The fourth proportional to 39,210.60, 54,110 and 21,305.92 is: 29,401.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,210.60 : 54,110 = 21,305.92 : x
  2. Step 2: Convert to fraction form
    39,210.60/54,110 = 21,305.92/x
  3. Step 3: Cross multiply
    39,210.60x = 54,110 × 21,305.92
  4. Step 4: Simplify right side
    39,210.60x = 1,152,863,331.20
  5. Step 5: Solve for x
    x = 1,152,863,331.20/39,210.60
  6. Step 6: Final answer
    x = 29,401.83

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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.