Home / 27,116.20-40,631.10-20,117.80

Finding the Fourth Proportional to 27,116.20, 40,631.10 and 20,117.80

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Solution

The fourth proportional to 27,116.20, 40,631.10 and 20,117.80 is: 30,144.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,116.20 : 40,631.10 = 20,117.80 : x
  2. Step 2: Convert to fraction form
    27,116.20/40,631.10 = 20,117.80/x
  3. Step 3: Cross multiply
    27,116.20x = 40,631.10 × 20,117.80
  4. Step 4: Simplify right side
    27,116.20x = 817,408,343.58
  5. Step 5: Solve for x
    x = 817,408,343.58/27,116.20
  6. Step 6: Final answer
    x = 30,144.65

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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.