Home / 20,139.24-30,192.23-8,886.57

Finding the Fourth Proportional to 20,139.24, 30,192.23 and 8,886.57

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Solution

The fourth proportional to 20,139.24, 30,192.23 and 8,886.57 is: 13,322.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.24 : 30,192.23 = 8,886.57 : x
  2. Step 2: Convert to fraction form
    20,139.24/30,192.23 = 8,886.57/x
  3. Step 3: Cross multiply
    20,139.24x = 30,192.23 × 8,886.57
  4. Step 4: Simplify right side
    20,139.24x = 268,305,365.35
  5. Step 5: Solve for x
    x = 268,305,365.35/20,139.24
  6. Step 6: Final answer
    x = 13,322.52

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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.