Home / 39,364.60-54,321.50-21,459.16

Finding the Fourth Proportional to 39,364.60, 54,321.50 and 21,459.16

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Solution

The fourth proportional to 39,364.60, 54,321.50 and 21,459.16 is: 29,612.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,364.60 : 54,321.50 = 21,459.16 : x
  2. Step 2: Convert to fraction form
    39,364.60/54,321.50 = 21,459.16/x
  3. Step 3: Cross multiply
    39,364.60x = 54,321.50 × 21,459.16
  4. Step 4: Simplify right side
    39,364.60x = 1,165,693,759.94
  5. Step 5: Solve for x
    x = 1,165,693,759.94/39,364.60
  6. Step 6: Final answer
    x = 29,612.74

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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.