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Finding the Fourth Proportional to 15,751.62, 21,737.04 and 8,677.89

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Solution

The fourth proportional to 15,751.62, 21,737.04 and 8,677.89 is: 11,975.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,751.62 : 21,737.04 = 8,677.89 : x
  2. Step 2: Convert to fraction form
    15,751.62/21,737.04 = 8,677.89/x
  3. Step 3: Cross multiply
    15,751.62x = 21,737.04 × 8,677.89
  4. Step 4: Simplify right side
    15,751.62x = 188,631,642.05
  5. Step 5: Solve for x
    x = 188,631,642.05/15,751.62
  6. Step 6: Final answer
    x = 11,975.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.