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Finding the Fourth Proportional to 8,688.30, 13,032.45 and 8,573.10

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Solution

The fourth proportional to 8,688.30, 13,032.45 and 8,573.10 is: 12,859.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.30 : 13,032.45 = 8,573.10 : x
  2. Step 2: Convert to fraction form
    8,688.30/13,032.45 = 8,573.10/x
  3. Step 3: Cross multiply
    8,688.30x = 13,032.45 × 8,573.10
  4. Step 4: Simplify right side
    8,688.30x = 111,728,497.10
  5. Step 5: Solve for x
    x = 111,728,497.10/8,688.30
  6. Step 6: Final answer
    x = 12,859.65

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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.