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Finding the Fourth Proportional to 27,479.40, 41,221.42 and 8,762.10

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Solution

The fourth proportional to 27,479.40, 41,221.42 and 8,762.10 is: 13,143.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,479.40 : 41,221.42 = 8,762.10 : x
  2. Step 2: Convert to fraction form
    27,479.40/41,221.42 = 8,762.10/x
  3. Step 3: Cross multiply
    27,479.40x = 41,221.42 × 8,762.10
  4. Step 4: Simplify right side
    27,479.40x = 361,186,204.18
  5. Step 5: Solve for x
    x = 361,186,204.18/27,479.40
  6. Step 6: Final answer
    x = 13,143.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.