Home / 21,313.28-31,972.31-17,397.87

Finding the Fourth Proportional to 21,313.28, 31,972.31 and 17,397.87

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Solution

The fourth proportional to 21,313.28, 31,972.31 and 17,397.87 is: 26,098.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.28 : 31,972.31 = 17,397.87 : x
  2. Step 2: Convert to fraction form
    21,313.28/31,972.31 = 17,397.87/x
  3. Step 3: Cross multiply
    21,313.28x = 31,972.31 × 17,397.87
  4. Step 4: Simplify right side
    21,313.28x = 556,250,016.58
  5. Step 5: Solve for x
    x = 556,250,016.58/21,313.28
  6. Step 6: Final answer
    x = 26,098.75

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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.