Home / 28,315.26-42,472.80-7,538.76

Finding the Fourth Proportional to 28,315.26, 42,472.80 and 7,538.76

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Solution

The fourth proportional to 28,315.26, 42,472.80 and 7,538.76 is: 11,308.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.26 : 42,472.80 = 7,538.76 : x
  2. Step 2: Convert to fraction form
    28,315.26/42,472.80 = 7,538.76/x
  3. Step 3: Cross multiply
    28,315.26x = 42,472.80 × 7,538.76
  4. Step 4: Simplify right side
    28,315.26x = 320,192,245.73
  5. Step 5: Solve for x
    x = 320,192,245.73/28,315.26
  6. Step 6: Final answer
    x = 11,308.12

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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.