Home / 20,167.20-30,248.37-7,681.86

Finding the Fourth Proportional to 20,167.20, 30,248.37 and 7,681.86

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Solution

The fourth proportional to 20,167.20, 30,248.37 and 7,681.86 is: 11,521.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.20 : 30,248.37 = 7,681.86 : x
  2. Step 2: Convert to fraction form
    20,167.20/30,248.37 = 7,681.86/x
  3. Step 3: Cross multiply
    20,167.20x = 30,248.37 × 7,681.86
  4. Step 4: Simplify right side
    20,167.20x = 232,363,743.57
  5. Step 5: Solve for x
    x = 232,363,743.57/20,167.20
  6. Step 6: Final answer
    x = 11,521.86

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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.