Home / 21,290.53-31,934.98-5,707.75

Finding the Fourth Proportional to 21,290.53, 31,934.98 and 5,707.75

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Solution

The fourth proportional to 21,290.53, 31,934.98 and 5,707.75 is: 8,561.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.53 : 31,934.98 = 5,707.75 : x
  2. Step 2: Convert to fraction form
    21,290.53/31,934.98 = 5,707.75/x
  3. Step 3: Cross multiply
    21,290.53x = 31,934.98 × 5,707.75
  4. Step 4: Simplify right side
    21,290.53x = 182,276,882.10
  5. Step 5: Solve for x
    x = 182,276,882.10/21,290.53
  6. Step 6: Final answer
    x = 8,561.41

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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.