Home / 20,381.48-28,113.50-14,724.54

Finding the Fourth Proportional to 20,381.48, 28,113.50 and 14,724.54

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Solution

The fourth proportional to 20,381.48, 28,113.50 and 14,724.54 is: 20,310.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.48 : 28,113.50 = 14,724.54 : x
  2. Step 2: Convert to fraction form
    20,381.48/28,113.50 = 14,724.54/x
  3. Step 3: Cross multiply
    20,381.48x = 28,113.50 × 14,724.54
  4. Step 4: Simplify right side
    20,381.48x = 413,958,309.28
  5. Step 5: Solve for x
    x = 413,958,309.28/20,381.48
  6. Step 6: Final answer
    x = 20,310.51

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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.