Home / 20,401.18-30,601.80-10,010.50

Finding the Fourth Proportional to 20,401.18, 30,601.80 and 10,010.50

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Solution

The fourth proportional to 20,401.18, 30,601.80 and 10,010.50 is: 15,015.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.18 : 30,601.80 = 10,010.50 : x
  2. Step 2: Convert to fraction form
    20,401.18/30,601.80 = 10,010.50/x
  3. Step 3: Cross multiply
    20,401.18x = 30,601.80 × 10,010.50
  4. Step 4: Simplify right side
    20,401.18x = 306,339,318.90
  5. Step 5: Solve for x
    x = 306,339,318.90/20,401.18
  6. Step 6: Final answer
    x = 15,015.76

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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.