Home / 21,158.52-31,737.96-8,675.28

Finding the Fourth Proportional to 21,158.52, 31,737.96 and 8,675.28

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Solution

The fourth proportional to 21,158.52, 31,737.96 and 8,675.28 is: 13,012.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.52 : 31,737.96 = 8,675.28 : x
  2. Step 2: Convert to fraction form
    21,158.52/31,737.96 = 8,675.28/x
  3. Step 3: Cross multiply
    21,158.52x = 31,737.96 × 8,675.28
  4. Step 4: Simplify right side
    21,158.52x = 275,335,689.63
  5. Step 5: Solve for x
    x = 275,335,689.63/21,158.52
  6. Step 6: Final answer
    x = 13,012.99

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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.