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Finding the Fourth Proportional to 12,581.55, 18,864.03 and 7,035.48

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Solution

The fourth proportional to 12,581.55, 18,864.03 and 7,035.48 is: 10,548.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.55 : 18,864.03 = 7,035.48 : x
  2. Step 2: Convert to fraction form
    12,581.55/18,864.03 = 7,035.48/x
  3. Step 3: Cross multiply
    12,581.55x = 18,864.03 × 7,035.48
  4. Step 4: Simplify right side
    12,581.55x = 132,717,505.78
  5. Step 5: Solve for x
    x = 132,717,505.78/12,581.55
  6. Step 6: Final answer
    x = 10,548.58

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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.