Home / 20,942.60-28,891.52-12,554.24

Finding the Fourth Proportional to 20,942.60, 28,891.52 and 12,554.24

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Solution

The fourth proportional to 20,942.60, 28,891.52 and 12,554.24 is: 17,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.60 : 28,891.52 = 12,554.24 : x
  2. Step 2: Convert to fraction form
    20,942.60/28,891.52 = 12,554.24/x
  3. Step 3: Cross multiply
    20,942.60x = 28,891.52 × 12,554.24
  4. Step 4: Simplify right side
    20,942.60x = 362,711,076.04
  5. Step 5: Solve for x
    x = 362,711,076.04/20,942.60
  6. Step 6: Final answer
    x = 17,319.30

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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.