Home / 20,039.47-30,030.45-11,255.91

Finding the Fourth Proportional to 20,039.47, 30,030.45 and 11,255.91

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Solution

The fourth proportional to 20,039.47, 30,030.45 and 11,255.91 is: 16,867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.47 : 30,030.45 = 11,255.91 : x
  2. Step 2: Convert to fraction form
    20,039.47/30,030.45 = 11,255.91/x
  3. Step 3: Cross multiply
    20,039.47x = 30,030.45 × 11,255.91
  4. Step 4: Simplify right side
    20,039.47x = 338,020,042.46
  5. Step 5: Solve for x
    x = 338,020,042.46/20,039.47
  6. Step 6: Final answer
    x = 16,867.71

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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.