Home / 20,579.06-30,868.59-8,900.48

Finding the Fourth Proportional to 20,579.06, 30,868.59 and 8,900.48

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Solution

The fourth proportional to 20,579.06, 30,868.59 and 8,900.48 is: 13,350.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.06 : 30,868.59 = 8,900.48 : x
  2. Step 2: Convert to fraction form
    20,579.06/30,868.59 = 8,900.48/x
  3. Step 3: Cross multiply
    20,579.06x = 30,868.59 × 8,900.48
  4. Step 4: Simplify right side
    20,579.06x = 274,745,378.47
  5. Step 5: Solve for x
    x = 274,745,378.47/20,579.06
  6. Step 6: Final answer
    x = 13,350.72

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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.