Home / 28,443.67-42,666.11-8,721.79

Finding the Fourth Proportional to 28,443.67, 42,666.11 and 8,721.79

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Solution

The fourth proportional to 28,443.67, 42,666.11 and 8,721.79 is: 13,082.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.67 : 42,666.11 = 8,721.79 : x
  2. Step 2: Convert to fraction form
    28,443.67/42,666.11 = 8,721.79/x
  3. Step 3: Cross multiply
    28,443.67x = 42,666.11 × 8,721.79
  4. Step 4: Simplify right side
    28,443.67x = 372,124,660.01
  5. Step 5: Solve for x
    x = 372,124,660.01/28,443.67
  6. Step 6: Final answer
    x = 13,082.87

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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.