Home / 38,380.59-52,969.10-21,387.60

Finding the Fourth Proportional to 38,380.59, 52,969.10 and 21,387.60

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Solution

The fourth proportional to 38,380.59, 52,969.10 and 21,387.60 is: 29,517.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,380.59 : 52,969.10 = 21,387.60 : x
  2. Step 2: Convert to fraction form
    38,380.59/52,969.10 = 21,387.60/x
  3. Step 3: Cross multiply
    38,380.59x = 52,969.10 × 21,387.60
  4. Step 4: Simplify right side
    38,380.59x = 1,132,881,816.22
  5. Step 5: Solve for x
    x = 1,132,881,816.22/38,380.59
  6. Step 6: Final answer
    x = 29,517.05

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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.