Home / 20,030.36-27,641.12-11,077.70

Finding the Fourth Proportional to 20,030.36, 27,641.12 and 11,077.70

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Solution

The fourth proportional to 20,030.36, 27,641.12 and 11,077.70 is: 15,286.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.36 : 27,641.12 = 11,077.70 : x
  2. Step 2: Convert to fraction form
    20,030.36/27,641.12 = 11,077.70/x
  3. Step 3: Cross multiply
    20,030.36x = 27,641.12 × 11,077.70
  4. Step 4: Simplify right side
    20,030.36x = 306,199,841.43
  5. Step 5: Solve for x
    x = 306,199,841.43/20,030.36
  6. Step 6: Final answer
    x = 15,286.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.