Home / 8,715.24-12,020.85-5,359.95

Finding the Fourth Proportional to 8,715.24, 12,020.85 and 5,359.95

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Solution

The fourth proportional to 8,715.24, 12,020.85 and 5,359.95 is: 7,392.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.24 : 12,020.85 = 5,359.95 : x
  2. Step 2: Convert to fraction form
    8,715.24/12,020.85 = 5,359.95/x
  3. Step 3: Cross multiply
    8,715.24x = 12,020.85 × 5,359.95
  4. Step 4: Simplify right side
    8,715.24x = 64,431,154.96
  5. Step 5: Solve for x
    x = 64,431,154.96/8,715.24
  6. Step 6: Final answer
    x = 7,392.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.