Home / 21,731.30-29,988.15-13,346.18

Finding the Fourth Proportional to 21,731.30, 29,988.15 and 13,346.18

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Solution

The fourth proportional to 21,731.30, 29,988.15 and 13,346.18 is: 18,417.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,731.30 : 29,988.15 = 13,346.18 : x
  2. Step 2: Convert to fraction form
    21,731.30/29,988.15 = 13,346.18/x
  3. Step 3: Cross multiply
    21,731.30x = 29,988.15 × 13,346.18
  4. Step 4: Simplify right side
    21,731.30x = 400,227,247.77
  5. Step 5: Solve for x
    x = 400,227,247.77/21,731.30
  6. Step 6: Final answer
    x = 18,417.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.