Home / 11,475.16-15,834.74-6,438.70

Finding the Fourth Proportional to 11,475.16, 15,834.74 and 6,438.70

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Solution

The fourth proportional to 11,475.16, 15,834.74 and 6,438.70 is: 8,884.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.16 : 15,834.74 = 6,438.70 : x
  2. Step 2: Convert to fraction form
    11,475.16/15,834.74 = 6,438.70/x
  3. Step 3: Cross multiply
    11,475.16x = 15,834.74 × 6,438.70
  4. Step 4: Simplify right side
    11,475.16x = 101,955,140.44
  5. Step 5: Solve for x
    x = 101,955,140.44/11,475.16
  6. Step 6: Final answer
    x = 8,884.86

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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.