Home / 19,120.64-28,680.98-5,974.16

Finding the Fourth Proportional to 19,120.64, 28,680.98 and 5,974.16

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Solution

The fourth proportional to 19,120.64, 28,680.98 and 5,974.16 is: 8,961.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.64 : 28,680.98 = 5,974.16 : x
  2. Step 2: Convert to fraction form
    19,120.64/28,680.98 = 5,974.16/x
  3. Step 3: Cross multiply
    19,120.64x = 28,680.98 × 5,974.16
  4. Step 4: Simplify right side
    19,120.64x = 171,344,590.20
  5. Step 5: Solve for x
    x = 171,344,590.20/19,120.64
  6. Step 6: Final answer
    x = 8,961.24

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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.