Home / 15,918.60-23,829.30-12,419.40

Finding the Fourth Proportional to 15,918.60, 23,829.30 and 12,419.40

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Solution

The fourth proportional to 15,918.60, 23,829.30 and 12,419.40 is: 18,591.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.60 : 23,829.30 = 12,419.40 : x
  2. Step 2: Convert to fraction form
    15,918.60/23,829.30 = 12,419.40/x
  3. Step 3: Cross multiply
    15,918.60x = 23,829.30 × 12,419.40
  4. Step 4: Simplify right side
    15,918.60x = 295,945,608.42
  5. Step 5: Solve for x
    x = 295,945,608.42/15,918.60
  6. Step 6: Final answer
    x = 18,591.18

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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.