Home / 10,442.20-15,659.40-4,200.10

Finding the Fourth Proportional to 10,442.20, 15,659.40 and 4,200.10

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Solution

The fourth proportional to 10,442.20, 15,659.40 and 4,200.10 is: 6,298.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,442.20 : 15,659.40 = 4,200.10 : x
  2. Step 2: Convert to fraction form
    10,442.20/15,659.40 = 4,200.10/x
  3. Step 3: Cross multiply
    10,442.20x = 15,659.40 × 4,200.10
  4. Step 4: Simplify right side
    10,442.20x = 65,771,045.94
  5. Step 5: Solve for x
    x = 65,771,045.94/10,442.20
  6. Step 6: Final answer
    x = 6,298.58

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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.