Home / 20,736.74-31,117-7,587.38

Finding the Fourth Proportional to 20,736.74, 31,117 and 7,587.38

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Solution

The fourth proportional to 20,736.74, 31,117 and 7,587.38 is: 11,385.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.74 : 31,117 = 7,587.38 : x
  2. Step 2: Convert to fraction form
    20,736.74/31,117 = 7,587.38/x
  3. Step 3: Cross multiply
    20,736.74x = 31,117 × 7,587.38
  4. Step 4: Simplify right side
    20,736.74x = 236,096,503.46
  5. Step 5: Solve for x
    x = 236,096,503.46/20,736.74
  6. Step 6: Final answer
    x = 11,385.42

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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.