Home / 10,442.39-15,659.93-4,200.78

Finding the Fourth Proportional to 10,442.39, 15,659.93 and 4,200.78

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Solution

The fourth proportional to 10,442.39, 15,659.93 and 4,200.78 is: 6,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,442.39 : 15,659.93 = 4,200.78 : x
  2. Step 2: Convert to fraction form
    10,442.39/15,659.93 = 4,200.78/x
  3. Step 3: Cross multiply
    10,442.39x = 15,659.93 × 4,200.78
  4. Step 4: Simplify right side
    10,442.39x = 65,783,856.77
  5. Step 5: Solve for x
    x = 65,783,856.77/10,442.39
  6. Step 6: Final answer
    x = 6,299.70

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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.