Home / 20,551.96-28,363.26-16,391.80

Finding the Fourth Proportional to 20,551.96, 28,363.26 and 16,391.80

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Solution

The fourth proportional to 20,551.96, 28,363.26 and 16,391.80 is: 22,621.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.96 : 28,363.26 = 16,391.80 : x
  2. Step 2: Convert to fraction form
    20,551.96/28,363.26 = 16,391.80/x
  3. Step 3: Cross multiply
    20,551.96x = 28,363.26 × 16,391.80
  4. Step 4: Simplify right side
    20,551.96x = 464,924,885.27
  5. Step 5: Solve for x
    x = 464,924,885.27/20,551.96
  6. Step 6: Final answer
    x = 22,621.92

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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.