Home / 20,528.97-28,330.19-12,036.12

Finding the Fourth Proportional to 20,528.97, 28,330.19 and 12,036.12

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Solution

The fourth proportional to 20,528.97, 28,330.19 and 12,036.12 is: 16,609.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.97 : 28,330.19 = 12,036.12 : x
  2. Step 2: Convert to fraction form
    20,528.97/28,330.19 = 12,036.12/x
  3. Step 3: Cross multiply
    20,528.97x = 28,330.19 × 12,036.12
  4. Step 4: Simplify right side
    20,528.97x = 340,985,506.28
  5. Step 5: Solve for x
    x = 340,985,506.28/20,528.97
  6. Step 6: Final answer
    x = 16,609.97

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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.