Home / 20,487.28-28,212.96-17,797.28

Finding the Fourth Proportional to 20,487.28, 28,212.96 and 17,797.28

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Solution

The fourth proportional to 20,487.28, 28,212.96 and 17,797.28 is: 24,508.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.28 : 28,212.96 = 17,797.28 : x
  2. Step 2: Convert to fraction form
    20,487.28/28,212.96 = 17,797.28/x
  3. Step 3: Cross multiply
    20,487.28x = 28,212.96 × 17,797.28
  4. Step 4: Simplify right side
    20,487.28x = 502,113,948.75
  5. Step 5: Solve for x
    x = 502,113,948.75/20,487.28
  6. Step 6: Final answer
    x = 24,508.57

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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.