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Finding the Fourth Proportional to 9,507.61, 13,124.16 and 8,511.13

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Solution

The fourth proportional to 9,507.61, 13,124.16 and 8,511.13 is: 11,748.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,507.61 : 13,124.16 = 8,511.13 : x
  2. Step 2: Convert to fraction form
    9,507.61/13,124.16 = 8,511.13/x
  3. Step 3: Cross multiply
    9,507.61x = 13,124.16 × 8,511.13
  4. Step 4: Simplify right side
    9,507.61x = 111,701,431.90
  5. Step 5: Solve for x
    x = 111,701,431.90/9,507.61
  6. Step 6: Final answer
    x = 11,748.63

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.