Home / 28,878.81-43,319.76-9,158.94

Finding the Fourth Proportional to 28,878.81, 43,319.76 and 9,158.94

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Solution

The fourth proportional to 28,878.81, 43,319.76 and 9,158.94 is: 13,738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.81 : 43,319.76 = 9,158.94 : x
  2. Step 2: Convert to fraction form
    28,878.81/43,319.76 = 9,158.94/x
  3. Step 3: Cross multiply
    28,878.81x = 43,319.76 × 9,158.94
  4. Step 4: Simplify right side
    28,878.81x = 396,763,082.65
  5. Step 5: Solve for x
    x = 396,763,082.65/28,878.81
  6. Step 6: Final answer
    x = 13,738.90

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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.