Home / 13,432.32-20,145.60-5,112

Finding the Fourth Proportional to 13,432.32, 20,145.60 and 5,112

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Solution

The fourth proportional to 13,432.32, 20,145.60 and 5,112 is: 7,666.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432.32 : 20,145.60 = 5,112 : x
  2. Step 2: Convert to fraction form
    13,432.32/20,145.60 = 5,112/x
  3. Step 3: Cross multiply
    13,432.32x = 20,145.60 × 5,112
  4. Step 4: Simplify right side
    13,432.32x = 102,984,307.20
  5. Step 5: Solve for x
    x = 102,984,307.20/13,432.32
  6. Step 6: Final answer
    x = 7,666.90

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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.