Home / 28,278.46-42,428.76-8,559.04

Finding the Fourth Proportional to 28,278.46, 42,428.76 and 8,559.04

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Solution

The fourth proportional to 28,278.46, 42,428.76 and 8,559.04 is: 12,841.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.46 : 42,428.76 = 8,559.04 : x
  2. Step 2: Convert to fraction form
    28,278.46/42,428.76 = 8,559.04/x
  3. Step 3: Cross multiply
    28,278.46x = 42,428.76 × 8,559.04
  4. Step 4: Simplify right side
    28,278.46x = 363,149,453.99
  5. Step 5: Solve for x
    x = 363,149,453.99/28,278.46
  6. Step 6: Final answer
    x = 12,841.91

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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.