Home / 39,410.30-54,385.76-21,505.60

Finding the Fourth Proportional to 39,410.30, 54,385.76 and 21,505.60

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Solution

The fourth proportional to 39,410.30, 54,385.76 and 21,505.60 is: 29,677.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,410.30 : 54,385.76 = 21,505.60 : x
  2. Step 2: Convert to fraction form
    39,410.30/54,385.76 = 21,505.60/x
  3. Step 3: Cross multiply
    39,410.30x = 54,385.76 × 21,505.60
  4. Step 4: Simplify right side
    39,410.30x = 1,169,598,400.26
  5. Step 5: Solve for x
    x = 1,169,598,400.26/39,410.30
  6. Step 6: Final answer
    x = 29,677.48

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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.