Home / 10,138.10-15,209.08-3,116.86

Finding the Fourth Proportional to 10,138.10, 15,209.08 and 3,116.86

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Solution

The fourth proportional to 10,138.10, 15,209.08 and 3,116.86 is: 4,675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.10 : 15,209.08 = 3,116.86 : x
  2. Step 2: Convert to fraction form
    10,138.10/15,209.08 = 3,116.86/x
  3. Step 3: Cross multiply
    10,138.10x = 15,209.08 × 3,116.86
  4. Step 4: Simplify right side
    10,138.10x = 47,404,527.27
  5. Step 5: Solve for x
    x = 47,404,527.27/10,138.10
  6. Step 6: Final answer
    x = 4,675.88

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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.