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Finding the Fourth Proportional to 12,215.52, 18,323.28 and 7,018.08

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Solution

The fourth proportional to 12,215.52, 18,323.28 and 7,018.08 is: 10,527.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.52 : 18,323.28 = 7,018.08 : x
  2. Step 2: Convert to fraction form
    12,215.52/18,323.28 = 7,018.08/x
  3. Step 3: Cross multiply
    12,215.52x = 18,323.28 × 7,018.08
  4. Step 4: Simplify right side
    12,215.52x = 128,594,244.90
  5. Step 5: Solve for x
    x = 128,594,244.90/12,215.52
  6. Step 6: Final answer
    x = 10,527.12

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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.