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Finding the Fourth Proportional to 8,957.39, 13,368.34 and 8,724.11

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Solution

The fourth proportional to 8,957.39, 13,368.34 and 8,724.11 is: 13,020.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.39 : 13,368.34 = 8,724.11 : x
  2. Step 2: Convert to fraction form
    8,957.39/13,368.34 = 8,724.11/x
  3. Step 3: Cross multiply
    8,957.39x = 13,368.34 × 8,724.11
  4. Step 4: Simplify right side
    8,957.39x = 116,626,812.74
  5. Step 5: Solve for x
    x = 116,626,812.74/8,957.39
  6. Step 6: Final answer
    x = 13,020.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.