Home / 21,473.61-29,617.56-20,531.31

Finding the Fourth Proportional to 21,473.61, 29,617.56 and 20,531.31

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Solution

The fourth proportional to 21,473.61, 29,617.56 and 20,531.31 is: 28,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,473.61 : 29,617.56 = 20,531.31 : x
  2. Step 2: Convert to fraction form
    21,473.61/29,617.56 = 20,531.31/x
  3. Step 3: Cross multiply
    21,473.61x = 29,617.56 × 20,531.31
  4. Step 4: Simplify right side
    21,473.61x = 608,087,305.80
  5. Step 5: Solve for x
    x = 608,087,305.80/21,473.61
  6. Step 6: Final answer
    x = 28,317.89

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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.