Home / 13,281.20-19,905.60-5,877.80

Finding the Fourth Proportional to 13,281.20, 19,905.60 and 5,877.80

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Solution

The fourth proportional to 13,281.20, 19,905.60 and 5,877.80 is: 8,809.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.20 : 19,905.60 = 5,877.80 : x
  2. Step 2: Convert to fraction form
    13,281.20/19,905.60 = 5,877.80/x
  3. Step 3: Cross multiply
    13,281.20x = 19,905.60 × 5,877.80
  4. Step 4: Simplify right side
    13,281.20x = 117,001,135.68
  5. Step 5: Solve for x
    x = 117,001,135.68/13,281.20
  6. Step 6: Final answer
    x = 8,809.53

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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.