Home / 13,134.40-19,669.20-9,829.60

Finding the Fourth Proportional to 13,134.40, 19,669.20 and 9,829.60

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Solution

The fourth proportional to 13,134.40, 19,669.20 and 9,829.60 is: 14,720.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.40 : 19,669.20 = 9,829.60 : x
  2. Step 2: Convert to fraction form
    13,134.40/19,669.20 = 9,829.60/x
  3. Step 3: Cross multiply
    13,134.40x = 19,669.20 × 9,829.60
  4. Step 4: Simplify right side
    13,134.40x = 193,340,368.32
  5. Step 5: Solve for x
    x = 193,340,368.32/13,134.40
  6. Step 6: Final answer
    x = 14,720.15

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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.