Home / 31,932.80-47,899.20-20,873.60

Finding the Fourth Proportional to 31,932.80, 47,899.20 and 20,873.60

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Solution

The fourth proportional to 31,932.80, 47,899.20 and 20,873.60 is: 31,310.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,932.80 : 47,899.20 = 20,873.60 : x
  2. Step 2: Convert to fraction form
    31,932.80/47,899.20 = 20,873.60/x
  3. Step 3: Cross multiply
    31,932.80x = 47,899.20 × 20,873.60
  4. Step 4: Simplify right side
    31,932.80x = 999,828,741.12
  5. Step 5: Solve for x
    x = 999,828,741.12/31,932.80
  6. Step 6: Final answer
    x = 31,310.40

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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.