Home / 21,657.22-29,887.13-12,704.87

Finding the Fourth Proportional to 21,657.22, 29,887.13 and 12,704.87

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Solution

The fourth proportional to 21,657.22, 29,887.13 and 12,704.87 is: 17,532.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.22 : 29,887.13 = 12,704.87 : x
  2. Step 2: Convert to fraction form
    21,657.22/29,887.13 = 12,704.87/x
  3. Step 3: Cross multiply
    21,657.22x = 29,887.13 × 12,704.87
  4. Step 4: Simplify right side
    21,657.22x = 379,712,101.32
  5. Step 5: Solve for x
    x = 379,712,101.32/21,657.22
  6. Step 6: Final answer
    x = 17,532.82

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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.