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Finding the Fourth Proportional to 9,721.11, 14,505.82 and 8,673.92

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Solution

The fourth proportional to 9,721.11, 14,505.82 and 8,673.92 is: 12,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.11 : 14,505.82 = 8,673.92 : x
  2. Step 2: Convert to fraction form
    9,721.11/14,505.82 = 8,673.92/x
  3. Step 3: Cross multiply
    9,721.11x = 14,505.82 × 8,673.92
  4. Step 4: Simplify right side
    9,721.11x = 125,822,282.40
  5. Step 5: Solve for x
    x = 125,822,282.40/9,721.11
  6. Step 6: Final answer
    x = 12,943.20

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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.