Home / 21,034.44-31,458.69-18,710.76

Finding the Fourth Proportional to 21,034.44, 31,458.69 and 18,710.76

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Solution

The fourth proportional to 21,034.44, 31,458.69 and 18,710.76 is: 27,983.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.44 : 31,458.69 = 18,710.76 : x
  2. Step 2: Convert to fraction form
    21,034.44/31,458.69 = 18,710.76/x
  3. Step 3: Cross multiply
    21,034.44x = 31,458.69 × 18,710.76
  4. Step 4: Simplify right side
    21,034.44x = 588,615,998.50
  5. Step 5: Solve for x
    x = 588,615,998.50/21,034.44
  6. Step 6: Final answer
    x = 27,983.44

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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.