Home / 28,278.24-42,426.96-9,809.76

Finding the Fourth Proportional to 28,278.24, 42,426.96 and 9,809.76

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Solution

The fourth proportional to 28,278.24, 42,426.96 and 9,809.76 is: 14,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.24 : 42,426.96 = 9,809.76 : x
  2. Step 2: Convert to fraction form
    28,278.24/42,426.96 = 9,809.76/x
  3. Step 3: Cross multiply
    28,278.24x = 42,426.96 × 9,809.76
  4. Step 4: Simplify right side
    28,278.24x = 416,198,295.13
  5. Step 5: Solve for x
    x = 416,198,295.13/28,278.24
  6. Step 6: Final answer
    x = 14,717.97

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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.