Home / 20,824.26-31,239.66-8,981.40

Finding the Fourth Proportional to 20,824.26, 31,239.66 and 8,981.40

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Solution

The fourth proportional to 20,824.26, 31,239.66 and 8,981.40 is: 13,473.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.26 : 31,239.66 = 8,981.40 : x
  2. Step 2: Convert to fraction form
    20,824.26/31,239.66 = 8,981.40/x
  3. Step 3: Cross multiply
    20,824.26x = 31,239.66 × 8,981.40
  4. Step 4: Simplify right side
    20,824.26x = 280,575,882.32
  5. Step 5: Solve for x
    x = 280,575,882.32/20,824.26
  6. Step 6: Final answer
    x = 13,473.51

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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.