Home / 9,919.10-13,687.90-5,442.74

Finding the Fourth Proportional to 9,919.10, 13,687.90 and 5,442.74

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Solution

The fourth proportional to 9,919.10, 13,687.90 and 5,442.74 is: 7,510.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.10 : 13,687.90 = 5,442.74 : x
  2. Step 2: Convert to fraction form
    9,919.10/13,687.90 = 5,442.74/x
  3. Step 3: Cross multiply
    9,919.10x = 13,687.90 × 5,442.74
  4. Step 4: Simplify right side
    9,919.10x = 74,499,680.85
  5. Step 5: Solve for x
    x = 74,499,680.85/9,919.10
  6. Step 6: Final answer
    x = 7,510.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.