Home / 21,561.74-29,755.18-12,607.49

Finding the Fourth Proportional to 21,561.74, 29,755.18 and 12,607.49

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Solution

The fourth proportional to 21,561.74, 29,755.18 and 12,607.49 is: 17,398.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.74 : 29,755.18 = 12,607.49 : x
  2. Step 2: Convert to fraction form
    21,561.74/29,755.18 = 12,607.49/x
  3. Step 3: Cross multiply
    21,561.74x = 29,755.18 × 12,607.49
  4. Step 4: Simplify right side
    21,561.74x = 375,138,134.30
  5. Step 5: Solve for x
    x = 375,138,134.30/21,561.74
  6. Step 6: Final answer
    x = 17,398.32

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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.