Home / 21,562.95-29,757.32-12,615.61

Finding the Fourth Proportional to 21,562.95, 29,757.32 and 12,615.61

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Solution

The fourth proportional to 21,562.95, 29,757.32 and 12,615.61 is: 17,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.95 : 29,757.32 = 12,615.61 : x
  2. Step 2: Convert to fraction form
    21,562.95/29,757.32 = 12,615.61/x
  3. Step 3: Cross multiply
    21,562.95x = 29,757.32 × 12,615.61
  4. Step 4: Simplify right side
    21,562.95x = 375,406,822.21
  5. Step 5: Solve for x
    x = 375,406,822.21/21,562.95
  6. Step 6: Final answer
    x = 17,409.81

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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.