Home / 10,122.39-13,964.70-6,720.99

Finding the Fourth Proportional to 10,122.39, 13,964.70 and 6,720.99

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Solution

The fourth proportional to 10,122.39, 13,964.70 and 6,720.99 is: 9,272.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.39 : 13,964.70 = 6,720.99 : x
  2. Step 2: Convert to fraction form
    10,122.39/13,964.70 = 6,720.99/x
  3. Step 3: Cross multiply
    10,122.39x = 13,964.70 × 6,720.99
  4. Step 4: Simplify right side
    10,122.39x = 93,856,609.05
  5. Step 5: Solve for x
    x = 93,856,609.05/10,122.39
  6. Step 6: Final answer
    x = 9,272.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.