Home / 20,873.17-31,313.39-9,186.08

Finding the Fourth Proportional to 20,873.17, 31,313.39 and 9,186.08

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Solution

The fourth proportional to 20,873.17, 31,313.39 and 9,186.08 is: 13,780.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.17 : 31,313.39 = 9,186.08 : x
  2. Step 2: Convert to fraction form
    20,873.17/31,313.39 = 9,186.08/x
  3. Step 3: Cross multiply
    20,873.17x = 31,313.39 × 9,186.08
  4. Step 4: Simplify right side
    20,873.17x = 287,647,305.61
  5. Step 5: Solve for x
    x = 287,647,305.61/20,873.17
  6. Step 6: Final answer
    x = 13,780.72

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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.