Home / 21,680.59-32,525-12,331.16

Finding the Fourth Proportional to 21,680.59, 32,525 and 12,331.16

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Solution

The fourth proportional to 21,680.59, 32,525 and 12,331.16 is: 18,499.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.59 : 32,525 = 12,331.16 : x
  2. Step 2: Convert to fraction form
    21,680.59/32,525 = 12,331.16/x
  3. Step 3: Cross multiply
    21,680.59x = 32,525 × 12,331.16
  4. Step 4: Simplify right side
    21,680.59x = 401,070,979
  5. Step 5: Solve for x
    x = 401,070,979/21,680.59
  6. Step 6: Final answer
    x = 18,499.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.