Home / 29,218.60-40,278.18-20,708.20

Finding the Fourth Proportional to 29,218.60, 40,278.18 and 20,708.20

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Solution

The fourth proportional to 29,218.60, 40,278.18 and 20,708.20 is: 28,546.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,218.60 : 40,278.18 = 20,708.20 : x
  2. Step 2: Convert to fraction form
    29,218.60/40,278.18 = 20,708.20/x
  3. Step 3: Cross multiply
    29,218.60x = 40,278.18 × 20,708.20
  4. Step 4: Simplify right side
    29,218.60x = 834,088,607.08
  5. Step 5: Solve for x
    x = 834,088,607.08/29,218.60
  6. Step 6: Final answer
    x = 28,546.49

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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.