Home / 15,699.57-21,644.46-13,451.82

Finding the Fourth Proportional to 15,699.57, 21,644.46 and 13,451.82

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Solution

The fourth proportional to 15,699.57, 21,644.46 and 13,451.82 is: 18,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.57 : 21,644.46 = 13,451.82 : x
  2. Step 2: Convert to fraction form
    15,699.57/21,644.46 = 13,451.82/x
  3. Step 3: Cross multiply
    15,699.57x = 21,644.46 × 13,451.82
  4. Step 4: Simplify right side
    15,699.57x = 291,157,379.92
  5. Step 5: Solve for x
    x = 291,157,379.92/15,699.57
  6. Step 6: Final answer
    x = 18,545.56

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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.