Home / 21,322.02-29,442.96-13,377.90

Finding the Fourth Proportional to 21,322.02, 29,442.96 and 13,377.90

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Solution

The fourth proportional to 21,322.02, 29,442.96 and 13,377.90 is: 18,473.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.02 : 29,442.96 = 13,377.90 : x
  2. Step 2: Convert to fraction form
    21,322.02/29,442.96 = 13,377.90/x
  3. Step 3: Cross multiply
    21,322.02x = 29,442.96 × 13,377.90
  4. Step 4: Simplify right side
    21,322.02x = 393,884,974.58
  5. Step 5: Solve for x
    x = 393,884,974.58/21,322.02
  6. Step 6: Final answer
    x = 18,473.15

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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.