Home / 13,393.28-20,077.28-6,811.76

Finding the Fourth Proportional to 13,393.28, 20,077.28 and 6,811.76

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Solution

The fourth proportional to 13,393.28, 20,077.28 and 6,811.76 is: 10,211.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.28 : 20,077.28 = 6,811.76 : x
  2. Step 2: Convert to fraction form
    13,393.28/20,077.28 = 6,811.76/x
  3. Step 3: Cross multiply
    13,393.28x = 20,077.28 × 6,811.76
  4. Step 4: Simplify right side
    13,393.28x = 136,761,612.81
  5. Step 5: Solve for x
    x = 136,761,612.81/13,393.28
  6. Step 6: Final answer
    x = 10,211.21

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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.