Home / 18,758.10-28,138.64-6,278.19

Finding the Fourth Proportional to 18,758.10, 28,138.64 and 6,278.19

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Solution

The fourth proportional to 18,758.10, 28,138.64 and 6,278.19 is: 9,417.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.10 : 28,138.64 = 6,278.19 : x
  2. Step 2: Convert to fraction form
    18,758.10/28,138.64 = 6,278.19/x
  3. Step 3: Cross multiply
    18,758.10x = 28,138.64 × 6,278.19
  4. Step 4: Simplify right side
    18,758.10x = 176,659,728.26
  5. Step 5: Solve for x
    x = 176,659,728.26/18,758.10
  6. Step 6: Final answer
    x = 9,417.78

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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.