Home / 14,279.20-21,426.12-6,889.96

Finding the Fourth Proportional to 14,279.20, 21,426.12 and 6,889.96

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Solution

The fourth proportional to 14,279.20, 21,426.12 and 6,889.96 is: 10,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.20 : 21,426.12 = 6,889.96 : x
  2. Step 2: Convert to fraction form
    14,279.20/21,426.12 = 6,889.96/x
  3. Step 3: Cross multiply
    14,279.20x = 21,426.12 × 6,889.96
  4. Step 4: Simplify right side
    14,279.20x = 147,625,109.76
  5. Step 5: Solve for x
    x = 147,625,109.76/14,279.20
  6. Step 6: Final answer
    x = 10,338.47

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1.5x scale

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.