Home / 10,083.95-15,116.61-5,407.21

Finding the Fourth Proportional to 10,083.95, 15,116.61 and 5,407.21

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Solution

The fourth proportional to 10,083.95, 15,116.61 and 5,407.21 is: 8,105.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,083.95 : 15,116.61 = 5,407.21 : x
  2. Step 2: Convert to fraction form
    10,083.95/15,116.61 = 5,407.21/x
  3. Step 3: Cross multiply
    10,083.95x = 15,116.61 × 5,407.21
  4. Step 4: Simplify right side
    10,083.95x = 81,738,684.76
  5. Step 5: Solve for x
    x = 81,738,684.76/10,083.95
  6. Step 6: Final answer
    x = 8,105.82

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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.