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Finding the Fourth Proportional to 8,694.40, 13,022.40 and 8,502.40

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Solution

The fourth proportional to 8,694.40, 13,022.40 and 8,502.40 is: 12,734.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.40 : 13,022.40 = 8,502.40 : x
  2. Step 2: Convert to fraction form
    8,694.40/13,022.40 = 8,502.40/x
  3. Step 3: Cross multiply
    8,694.40x = 13,022.40 × 8,502.40
  4. Step 4: Simplify right side
    8,694.40x = 110,721,653.76
  5. Step 5: Solve for x
    x = 110,721,653.76/8,694.40
  6. Step 6: Final answer
    x = 12,734.82

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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.