Home / 28,480.19-42,724.35-8,760.40

Finding the Fourth Proportional to 28,480.19, 42,724.35 and 8,760.40

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Solution

The fourth proportional to 28,480.19, 42,724.35 and 8,760.40 is: 13,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480.19 : 42,724.35 = 8,760.40 : x
  2. Step 2: Convert to fraction form
    28,480.19/42,724.35 = 8,760.40/x
  3. Step 3: Cross multiply
    28,480.19x = 42,724.35 × 8,760.40
  4. Step 4: Simplify right side
    28,480.19x = 374,282,288.93
  5. Step 5: Solve for x
    x = 374,282,288.93/28,480.19
  6. Step 6: Final answer
    x = 13,141.85

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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.