Home / 13,722.28-20,575.69-4,360.57

Finding the Fourth Proportional to 13,722.28, 20,575.69 and 4,360.57

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Solution

The fourth proportional to 13,722.28, 20,575.69 and 4,360.57 is: 6,538.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.28 : 20,575.69 = 4,360.57 : x
  2. Step 2: Convert to fraction form
    13,722.28/20,575.69 = 4,360.57/x
  3. Step 3: Cross multiply
    13,722.28x = 20,575.69 × 4,360.57
  4. Step 4: Simplify right side
    13,722.28x = 89,721,674.20
  5. Step 5: Solve for x
    x = 89,721,674.20/13,722.28
  6. Step 6: Final answer
    x = 6,538.40

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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.