Home / 10,142.60-15,215.52-4,299.28

Finding the Fourth Proportional to 10,142.60, 15,215.52 and 4,299.28

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Solution

The fourth proportional to 10,142.60, 15,215.52 and 4,299.28 is: 6,449.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.60 : 15,215.52 = 4,299.28 : x
  2. Step 2: Convert to fraction form
    10,142.60/15,215.52 = 4,299.28/x
  3. Step 3: Cross multiply
    10,142.60x = 15,215.52 × 4,299.28
  4. Step 4: Simplify right side
    10,142.60x = 65,415,780.83
  5. Step 5: Solve for x
    x = 65,415,780.83/10,142.60
  6. Step 6: Final answer
    x = 6,449.61

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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.