Home / 20,718.64-31,081.13-7,567.89

Finding the Fourth Proportional to 20,718.64, 31,081.13 and 7,567.89

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Solution

The fourth proportional to 20,718.64, 31,081.13 and 7,567.89 is: 11,352.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.64 : 31,081.13 = 7,567.89 : x
  2. Step 2: Convert to fraction form
    20,718.64/31,081.13 = 7,567.89/x
  3. Step 3: Cross multiply
    20,718.64x = 31,081.13 × 7,567.89
  4. Step 4: Simplify right side
    20,718.64x = 235,218,572.92
  5. Step 5: Solve for x
    x = 235,218,572.92/20,718.64
  6. Step 6: Final answer
    x = 11,352.99

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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.