Home / 20,793.24-31,171.40-7,642.52

Finding the Fourth Proportional to 20,793.24, 31,171.40 and 7,642.52

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Solution

The fourth proportional to 20,793.24, 31,171.40 and 7,642.52 is: 11,457.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.24 : 31,171.40 = 7,642.52 : x
  2. Step 2: Convert to fraction form
    20,793.24/31,171.40 = 7,642.52/x
  3. Step 3: Cross multiply
    20,793.24x = 31,171.40 × 7,642.52
  4. Step 4: Simplify right side
    20,793.24x = 238,228,047.93
  5. Step 5: Solve for x
    x = 238,228,047.93/20,793.24
  6. Step 6: Final answer
    x = 11,457.00

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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.