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Finding the Fourth Proportional to 8,553.06, 12,897.99 and 8,436.11

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Solution

The fourth proportional to 8,553.06, 12,897.99 and 8,436.11 is: 12,721.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,553.06 : 12,897.99 = 8,436.11 : x
  2. Step 2: Convert to fraction form
    8,553.06/12,897.99 = 8,436.11/x
  3. Step 3: Cross multiply
    8,553.06x = 12,897.99 × 8,436.11
  4. Step 4: Simplify right side
    8,553.06x = 108,808,830.17
  5. Step 5: Solve for x
    x = 108,808,830.17/8,553.06
  6. Step 6: Final answer
    x = 12,721.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.