Home / 21,561.04-29,753.89-12,000.81

Finding the Fourth Proportional to 21,561.04, 29,753.89 and 12,000.81

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Solution

The fourth proportional to 21,561.04, 29,753.89 and 12,000.81 is: 16,560.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.04 : 29,753.89 = 12,000.81 : x
  2. Step 2: Convert to fraction form
    21,561.04/29,753.89 = 12,000.81/x
  3. Step 3: Cross multiply
    21,561.04x = 29,753.89 × 12,000.81
  4. Step 4: Simplify right side
    21,561.04x = 357,070,780.65
  5. Step 5: Solve for x
    x = 357,070,780.65/21,561.04
  6. Step 6: Final answer
    x = 16,560.93

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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.