Home / 20,424.77-30,645.88-9,902.57

Finding the Fourth Proportional to 20,424.77, 30,645.88 and 9,902.57

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Solution

The fourth proportional to 20,424.77, 30,645.88 and 9,902.57 is: 14,858.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.77 : 30,645.88 = 9,902.57 : x
  2. Step 2: Convert to fraction form
    20,424.77/30,645.88 = 9,902.57/x
  3. Step 3: Cross multiply
    20,424.77x = 30,645.88 × 9,902.57
  4. Step 4: Simplify right side
    20,424.77x = 303,472,793.93
  5. Step 5: Solve for x
    x = 303,472,793.93/20,424.77
  6. Step 6: Final answer
    x = 14,858.07

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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.