Home / 21,717.18-29,967.18-12,157.59

Finding the Fourth Proportional to 21,717.18, 29,967.18 and 12,157.59

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Solution

The fourth proportional to 21,717.18, 29,967.18 and 12,157.59 is: 16,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.18 : 29,967.18 = 12,157.59 : x
  2. Step 2: Convert to fraction form
    21,717.18/29,967.18 = 12,157.59/x
  3. Step 3: Cross multiply
    21,717.18x = 29,967.18 × 12,157.59
  4. Step 4: Simplify right side
    21,717.18x = 364,328,687.90
  5. Step 5: Solve for x
    x = 364,328,687.90/21,717.18
  6. Step 6: Final answer
    x = 16,776.06

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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.