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Finding the Fourth Proportional to 27,748.60, 41,622.90 and 11,111.20

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Solution

The fourth proportional to 27,748.60, 41,622.90 and 11,111.20 is: 16,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,748.60 : 41,622.90 = 11,111.20 : x
  2. Step 2: Convert to fraction form
    27,748.60/41,622.90 = 11,111.20/x
  3. Step 3: Cross multiply
    27,748.60x = 41,622.90 × 11,111.20
  4. Step 4: Simplify right side
    27,748.60x = 462,480,366.48
  5. Step 5: Solve for x
    x = 462,480,366.48/27,748.60
  6. Step 6: Final answer
    x = 16,666.80

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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.