Home / 21,171.28-31,763.76-17,511.04

Finding the Fourth Proportional to 21,171.28, 31,763.76 and 17,511.04

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Solution

The fourth proportional to 21,171.28, 31,763.76 and 17,511.04 is: 26,272.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.28 : 31,763.76 = 17,511.04 : x
  2. Step 2: Convert to fraction form
    21,171.28/31,763.76 = 17,511.04/x
  3. Step 3: Cross multiply
    21,171.28x = 31,763.76 × 17,511.04
  4. Step 4: Simplify right side
    21,171.28x = 556,216,471.91
  5. Step 5: Solve for x
    x = 556,216,471.91/21,171.28
  6. Step 6: Final answer
    x = 26,272.22

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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.