Home / 13,403.04-20,078.40-8,772

Finding the Fourth Proportional to 13,403.04, 20,078.40 and 8,772

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Solution

The fourth proportional to 13,403.04, 20,078.40 and 8,772 is: 13,140.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.04 : 20,078.40 = 8,772 : x
  2. Step 2: Convert to fraction form
    13,403.04/20,078.40 = 8,772/x
  3. Step 3: Cross multiply
    13,403.04x = 20,078.40 × 8,772
  4. Step 4: Simplify right side
    13,403.04x = 176,127,724.80
  5. Step 5: Solve for x
    x = 176,127,724.80/13,403.04
  6. Step 6: Final answer
    x = 13,140.88

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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.