Home / 20,824.64-31,162.80-16,691.20

Finding the Fourth Proportional to 20,824.64, 31,162.80 and 16,691.20

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Solution

The fourth proportional to 20,824.64, 31,162.80 and 16,691.20 is: 24,977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.64 : 31,162.80 = 16,691.20 : x
  2. Step 2: Convert to fraction form
    20,824.64/31,162.80 = 16,691.20/x
  3. Step 3: Cross multiply
    20,824.64x = 31,162.80 × 16,691.20
  4. Step 4: Simplify right side
    20,824.64x = 520,144,527.36
  5. Step 5: Solve for x
    x = 520,144,527.36/20,824.64
  6. Step 6: Final answer
    x = 24,977.36

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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.