Home / 20,581.61-30,872.43-4,999.23

Finding the Fourth Proportional to 20,581.61, 30,872.43 and 4,999.23

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Solution

The fourth proportional to 20,581.61, 30,872.43 and 4,999.23 is: 7,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.61 : 30,872.43 = 4,999.23 : x
  2. Step 2: Convert to fraction form
    20,581.61/30,872.43 = 4,999.23/x
  3. Step 3: Cross multiply
    20,581.61x = 30,872.43 × 4,999.23
  4. Step 4: Simplify right side
    20,581.61x = 154,338,378.23
  5. Step 5: Solve for x
    x = 154,338,378.23/20,581.61
  6. Step 6: Final answer
    x = 7,498.85

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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.