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Finding the Fourth Proportional to 12,319.28, 18,484.28 and 6,474.48

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Solution

The fourth proportional to 12,319.28, 18,484.28 and 6,474.48 is: 9,714.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.28 : 18,484.28 = 6,474.48 : x
  2. Step 2: Convert to fraction form
    12,319.28/18,484.28 = 6,474.48/x
  3. Step 3: Cross multiply
    12,319.28x = 18,484.28 × 6,474.48
  4. Step 4: Simplify right side
    12,319.28x = 119,676,101.17
  5. Step 5: Solve for x
    x = 119,676,101.17/12,319.28
  6. Step 6: Final answer
    x = 9,714.54

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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.