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Finding the Fourth Proportional to 15,561.80, 23,342.70 and 9,000.80

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Solution

The fourth proportional to 15,561.80, 23,342.70 and 9,000.80 is: 13,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.80 : 23,342.70 = 9,000.80 : x
  2. Step 2: Convert to fraction form
    15,561.80/23,342.70 = 9,000.80/x
  3. Step 3: Cross multiply
    15,561.80x = 23,342.70 × 9,000.80
  4. Step 4: Simplify right side
    15,561.80x = 210,102,974.16
  5. Step 5: Solve for x
    x = 210,102,974.16/15,561.80
  6. Step 6: Final answer
    x = 13,501.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.