Home / 18,876.38-28,320.74-5,728.76

Finding the Fourth Proportional to 18,876.38, 28,320.74 and 5,728.76

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Solution

The fourth proportional to 18,876.38, 28,320.74 and 5,728.76 is: 8,595.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.38 : 28,320.74 = 5,728.76 : x
  2. Step 2: Convert to fraction form
    18,876.38/28,320.74 = 5,728.76/x
  3. Step 3: Cross multiply
    18,876.38x = 28,320.74 × 5,728.76
  4. Step 4: Simplify right side
    18,876.38x = 162,242,679.92
  5. Step 5: Solve for x
    x = 162,242,679.92/18,876.38
  6. Step 6: Final answer
    x = 8,595.01

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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.