Home / 21,500.18-29,670.44-12,545.96

Finding the Fourth Proportional to 21,500.18, 29,670.44 and 12,545.96

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Solution

The fourth proportional to 21,500.18, 29,670.44 and 12,545.96 is: 17,313.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500.18 : 29,670.44 = 12,545.96 : x
  2. Step 2: Convert to fraction form
    21,500.18/29,670.44 = 12,545.96/x
  3. Step 3: Cross multiply
    21,500.18x = 29,670.44 × 12,545.96
  4. Step 4: Simplify right side
    21,500.18x = 372,244,097.55
  5. Step 5: Solve for x
    x = 372,244,097.55/21,500.18
  6. Step 6: Final answer
    x = 17,313.53

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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.