Home / 10,228.20-15,342.30-7,117.80

Finding the Fourth Proportional to 10,228.20, 15,342.30 and 7,117.80

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Solution

The fourth proportional to 10,228.20, 15,342.30 and 7,117.80 is: 10,676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,228.20 : 15,342.30 = 7,117.80 : x
  2. Step 2: Convert to fraction form
    10,228.20/15,342.30 = 7,117.80/x
  3. Step 3: Cross multiply
    10,228.20x = 15,342.30 × 7,117.80
  4. Step 4: Simplify right side
    10,228.20x = 109,203,422.94
  5. Step 5: Solve for x
    x = 109,203,422.94/10,228.20
  6. Step 6: Final answer
    x = 10,676.70

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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.