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Finding the Fourth Proportional to 10,641.62, 14,678.79 and 7,652.72

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Solution

The fourth proportional to 10,641.62, 14,678.79 and 7,652.72 is: 10,555.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.62 : 14,678.79 = 7,652.72 : x
  2. Step 2: Convert to fraction form
    10,641.62/14,678.79 = 7,652.72/x
  3. Step 3: Cross multiply
    10,641.62x = 14,678.79 × 7,652.72
  4. Step 4: Simplify right side
    10,641.62x = 112,332,668.24
  5. Step 5: Solve for x
    x = 112,332,668.24/10,641.62
  6. Step 6: Final answer
    x = 10,555.97

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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.