Home / 21,561.66-29,754.60-12,001.11

Finding the Fourth Proportional to 21,561.66, 29,754.60 and 12,001.11

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Solution

The fourth proportional to 21,561.66, 29,754.60 and 12,001.11 is: 16,561.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.66 : 29,754.60 = 12,001.11 : x
  2. Step 2: Convert to fraction form
    21,561.66/29,754.60 = 12,001.11/x
  3. Step 3: Cross multiply
    21,561.66x = 29,754.60 × 12,001.11
  4. Step 4: Simplify right side
    21,561.66x = 357,088,227.61
  5. Step 5: Solve for x
    x = 357,088,227.61/21,561.66
  6. Step 6: Final answer
    x = 16,561.26

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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.