Home / 13,711.06-20,555.25-6,309.28

Finding the Fourth Proportional to 13,711.06, 20,555.25 and 6,309.28

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Solution

The fourth proportional to 13,711.06, 20,555.25 and 6,309.28 is: 9,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.06 : 20,555.25 = 6,309.28 : x
  2. Step 2: Convert to fraction form
    13,711.06/20,555.25 = 6,309.28/x
  3. Step 3: Cross multiply
    13,711.06x = 20,555.25 × 6,309.28
  4. Step 4: Simplify right side
    13,711.06x = 129,688,827.72
  5. Step 5: Solve for x
    x = 129,688,827.72/13,711.06
  6. Step 6: Final answer
    x = 9,458.70

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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.