Home / 20,333.97-28,059.55-11,381.28

Finding the Fourth Proportional to 20,333.97, 28,059.55 and 11,381.28

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Solution

The fourth proportional to 20,333.97, 28,059.55 and 11,381.28 is: 15,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.97 : 28,059.55 = 11,381.28 : x
  2. Step 2: Convert to fraction form
    20,333.97/28,059.55 = 11,381.28/x
  3. Step 3: Cross multiply
    20,333.97x = 28,059.55 × 11,381.28
  4. Step 4: Simplify right side
    20,333.97x = 319,353,746.31
  5. Step 5: Solve for x
    x = 319,353,746.31/20,333.97
  6. Step 6: Final answer
    x = 15,705.43

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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.