Home / 10,209.60-15,314.40-4,669.20

Finding the Fourth Proportional to 10,209.60, 15,314.40 and 4,669.20

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Solution

The fourth proportional to 10,209.60, 15,314.40 and 4,669.20 is: 7,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209.60 : 15,314.40 = 4,669.20 : x
  2. Step 2: Convert to fraction form
    10,209.60/15,314.40 = 4,669.20/x
  3. Step 3: Cross multiply
    10,209.60x = 15,314.40 × 4,669.20
  4. Step 4: Simplify right side
    10,209.60x = 71,505,996.48
  5. Step 5: Solve for x
    x = 71,505,996.48/10,209.60
  6. Step 6: Final answer
    x = 7,003.80

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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.