Home / 13,604.08-20,403.96-5,287.90

Finding the Fourth Proportional to 13,604.08, 20,403.96 and 5,287.90

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Solution

The fourth proportional to 13,604.08, 20,403.96 and 5,287.90 is: 7,931.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.08 : 20,403.96 = 5,287.90 : x
  2. Step 2: Convert to fraction form
    13,604.08/20,403.96 = 5,287.90/x
  3. Step 3: Cross multiply
    13,604.08x = 20,403.96 × 5,287.90
  4. Step 4: Simplify right side
    13,604.08x = 107,894,100.08
  5. Step 5: Solve for x
    x = 107,894,100.08/13,604.08
  6. Step 6: Final answer
    x = 7,931.01

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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.