Home / 28,878.08-43,318.64-9,158.18

Finding the Fourth Proportional to 28,878.08, 43,318.64 and 9,158.18

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Solution

The fourth proportional to 28,878.08, 43,318.64 and 9,158.18 is: 13,737.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.08 : 43,318.64 = 9,158.18 : x
  2. Step 2: Convert to fraction form
    28,878.08/43,318.64 = 9,158.18/x
  3. Step 3: Cross multiply
    28,878.08x = 43,318.64 × 9,158.18
  4. Step 4: Simplify right side
    28,878.08x = 396,719,708.78
  5. Step 5: Solve for x
    x = 396,719,708.78/28,878.08
  6. Step 6: Final answer
    x = 13,737.75

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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.