Home / 10,155.20-15,227.40-4,305.20

Finding the Fourth Proportional to 10,155.20, 15,227.40 and 4,305.20

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Solution

The fourth proportional to 10,155.20, 15,227.40 and 4,305.20 is: 6,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.20 : 15,227.40 = 4,305.20 : x
  2. Step 2: Convert to fraction form
    10,155.20/15,227.40 = 4,305.20/x
  3. Step 3: Cross multiply
    10,155.20x = 15,227.40 × 4,305.20
  4. Step 4: Simplify right side
    10,155.20x = 65,557,002.48
  5. Step 5: Solve for x
    x = 65,557,002.48/10,155.20
  6. Step 6: Final answer
    x = 6,455.51

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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.