Home / 10,122.30-14,015.43-9,344.70

Finding the Fourth Proportional to 10,122.30, 14,015.43 and 9,344.70

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Solution

The fourth proportional to 10,122.30, 14,015.43 and 9,344.70 is: 12,938.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.30 : 14,015.43 = 9,344.70 : x
  2. Step 2: Convert to fraction form
    10,122.30/14,015.43 = 9,344.70/x
  3. Step 3: Cross multiply
    10,122.30x = 14,015.43 × 9,344.70
  4. Step 4: Simplify right side
    10,122.30x = 130,969,988.72
  5. Step 5: Solve for x
    x = 130,969,988.72/10,122.30
  6. Step 6: Final answer
    x = 12,938.76

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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.