Home / 20,401.95-30,614.63-9,155.97

Finding the Fourth Proportional to 20,401.95, 30,614.63 and 9,155.97

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Solution

The fourth proportional to 20,401.95, 30,614.63 and 9,155.97 is: 13,739.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.95 : 30,614.63 = 9,155.97 : x
  2. Step 2: Convert to fraction form
    20,401.95/30,614.63 = 9,155.97/x
  3. Step 3: Cross multiply
    20,401.95x = 30,614.63 × 9,155.97
  4. Step 4: Simplify right side
    20,401.95x = 280,306,588.06
  5. Step 5: Solve for x
    x = 280,306,588.06/20,401.95
  6. Step 6: Final answer
    x = 13,739.21

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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.