Home / 20,657.26-28,506.89-11,225.82

Finding the Fourth Proportional to 20,657.26, 28,506.89 and 11,225.82

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Solution

The fourth proportional to 20,657.26, 28,506.89 and 11,225.82 is: 15,491.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.26 : 28,506.89 = 11,225.82 : x
  2. Step 2: Convert to fraction form
    20,657.26/28,506.89 = 11,225.82/x
  3. Step 3: Cross multiply
    20,657.26x = 28,506.89 × 11,225.82
  4. Step 4: Simplify right side
    20,657.26x = 320,013,287.72
  5. Step 5: Solve for x
    x = 320,013,287.72/20,657.26
  6. Step 6: Final answer
    x = 15,491.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.