Home / 10,442.28-15,662.96-4,200.40

Finding the Fourth Proportional to 10,442.28, 15,662.96 and 4,200.40

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Solution

The fourth proportional to 10,442.28, 15,662.96 and 4,200.40 is: 6,300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,442.28 : 15,662.96 = 4,200.40 : x
  2. Step 2: Convert to fraction form
    10,442.28/15,662.96 = 4,200.40/x
  3. Step 3: Cross multiply
    10,442.28x = 15,662.96 × 4,200.40
  4. Step 4: Simplify right side
    10,442.28x = 65,790,697.18
  5. Step 5: Solve for x
    x = 65,790,697.18/10,442.28
  6. Step 6: Final answer
    x = 6,300.41

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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.