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Finding the Fourth Proportional to 9,999.56, 15,008.54 and 9,396.78

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Solution

The fourth proportional to 9,999.56, 15,008.54 and 9,396.78 is: 14,103.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.56 : 15,008.54 = 9,396.78 : x
  2. Step 2: Convert to fraction form
    9,999.56/15,008.54 = 9,396.78/x
  3. Step 3: Cross multiply
    9,999.56x = 15,008.54 × 9,396.78
  4. Step 4: Simplify right side
    9,999.56x = 141,031,948.50
  5. Step 5: Solve for x
    x = 141,031,948.50/9,999.56
  6. Step 6: Final answer
    x = 14,103.82

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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.