Home / 21,523.02-29,689.38-13,442.62

Finding the Fourth Proportional to 21,523.02, 29,689.38 and 13,442.62

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Solution

The fourth proportional to 21,523.02, 29,689.38 and 13,442.62 is: 18,543.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.02 : 29,689.38 = 13,442.62 : x
  2. Step 2: Convert to fraction form
    21,523.02/29,689.38 = 13,442.62/x
  3. Step 3: Cross multiply
    21,523.02x = 29,689.38 × 13,442.62
  4. Step 4: Simplify right side
    21,523.02x = 399,103,053.38
  5. Step 5: Solve for x
    x = 399,103,053.38/21,523.02
  6. Step 6: Final answer
    x = 18,543.08

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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.