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Finding the Fourth Proportional to 27,119.80, 40,679.70 and 17,818.60

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Solution

The fourth proportional to 27,119.80, 40,679.70 and 17,818.60 is: 26,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,119.80 : 40,679.70 = 17,818.60 : x
  2. Step 2: Convert to fraction form
    27,119.80/40,679.70 = 17,818.60/x
  3. Step 3: Cross multiply
    27,119.80x = 40,679.70 × 17,818.60
  4. Step 4: Simplify right side
    27,119.80x = 724,855,302.42
  5. Step 5: Solve for x
    x = 724,855,302.42/27,119.80
  6. Step 6: Final answer
    x = 26,727.90

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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.