Home / 18,756.38-28,124.19-7,670.85

Finding the Fourth Proportional to 18,756.38, 28,124.19 and 7,670.85

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Solution

The fourth proportional to 18,756.38, 28,124.19 and 7,670.85 is: 11,502.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756.38 : 28,124.19 = 7,670.85 : x
  2. Step 2: Convert to fraction form
    18,756.38/28,124.19 = 7,670.85/x
  3. Step 3: Cross multiply
    18,756.38x = 28,124.19 × 7,670.85
  4. Step 4: Simplify right side
    18,756.38x = 215,736,513.17
  5. Step 5: Solve for x
    x = 215,736,513.17/18,756.38
  6. Step 6: Final answer
    x = 11,502.03

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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.