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Finding the Fourth Proportional to 15,187.11, 22,780.86 and 5,326.67

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Solution

The fourth proportional to 15,187.11, 22,780.86 and 5,326.67 is: 7,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.11 : 22,780.86 = 5,326.67 : x
  2. Step 2: Convert to fraction form
    15,187.11/22,780.86 = 5,326.67/x
  3. Step 3: Cross multiply
    15,187.11x = 22,780.86 × 5,326.67
  4. Step 4: Simplify right side
    15,187.11x = 121,346,123.54
  5. Step 5: Solve for x
    x = 121,346,123.54/15,187.11
  6. Step 6: Final answer
    x = 7,990.08

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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.