Home / 10,205.20-15,317.40-6,317.20

Finding the Fourth Proportional to 10,205.20, 15,317.40 and 6,317.20

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Solution

The fourth proportional to 10,205.20, 15,317.40 and 6,317.20 is: 9,481.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205.20 : 15,317.40 = 6,317.20 : x
  2. Step 2: Convert to fraction form
    10,205.20/15,317.40 = 6,317.20/x
  3. Step 3: Cross multiply
    10,205.20x = 15,317.40 × 6,317.20
  4. Step 4: Simplify right side
    10,205.20x = 96,763,079.28
  5. Step 5: Solve for x
    x = 96,763,079.28/10,205.20
  6. Step 6: Final answer
    x = 9,481.74

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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.