Home / 20,494.80-28,272.81-17,657.25

Finding the Fourth Proportional to 20,494.80, 28,272.81 and 17,657.25

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Solution

The fourth proportional to 20,494.80, 28,272.81 and 17,657.25 is: 24,358.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.80 : 28,272.81 = 17,657.25 : x
  2. Step 2: Convert to fraction form
    20,494.80/28,272.81 = 17,657.25/x
  3. Step 3: Cross multiply
    20,494.80x = 28,272.81 × 17,657.25
  4. Step 4: Simplify right side
    20,494.80x = 499,220,077.46
  5. Step 5: Solve for x
    x = 499,220,077.46/20,494.80
  6. Step 6: Final answer
    x = 24,358.37

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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.