Home / 12,378.50-17,083.23-7,073.20

Finding the Fourth Proportional to 12,378.50, 17,083.23 and 7,073.20

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Solution

The fourth proportional to 12,378.50, 17,083.23 and 7,073.20 is: 9,761.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.50 : 17,083.23 = 7,073.20 : x
  2. Step 2: Convert to fraction form
    12,378.50/17,083.23 = 7,073.20/x
  3. Step 3: Cross multiply
    12,378.50x = 17,083.23 × 7,073.20
  4. Step 4: Simplify right side
    12,378.50x = 120,833,102.44
  5. Step 5: Solve for x
    x = 120,833,102.44/12,378.50
  6. Step 6: Final answer
    x = 9,761.53

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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.