Home / 18,849.81-28,235.08-8,979.15

Finding the Fourth Proportional to 18,849.81, 28,235.08 and 8,979.15

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Solution

The fourth proportional to 18,849.81, 28,235.08 and 8,979.15 is: 13,449.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,849.81 : 28,235.08 = 8,979.15 : x
  2. Step 2: Convert to fraction form
    18,849.81/28,235.08 = 8,979.15/x
  3. Step 3: Cross multiply
    18,849.81x = 28,235.08 × 8,979.15
  4. Step 4: Simplify right side
    18,849.81x = 253,527,135.69
  5. Step 5: Solve for x
    x = 253,527,135.69/18,849.81
  6. Step 6: Final answer
    x = 13,449.85

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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.