Home / 20,772.52-28,668.13-12,277.44

Finding the Fourth Proportional to 20,772.52, 28,668.13 and 12,277.44

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Solution

The fourth proportional to 20,772.52, 28,668.13 and 12,277.44 is: 16,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.52 : 28,668.13 = 12,277.44 : x
  2. Step 2: Convert to fraction form
    20,772.52/28,668.13 = 12,277.44/x
  3. Step 3: Cross multiply
    20,772.52x = 28,668.13 × 12,277.44
  4. Step 4: Simplify right side
    20,772.52x = 351,971,215.29
  5. Step 5: Solve for x
    x = 351,971,215.29/20,772.52
  6. Step 6: Final answer
    x = 16,944.08

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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.