Home / 20,654.93-28,501.28-11,578.20

Finding the Fourth Proportional to 20,654.93, 28,501.28 and 11,578.20

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Solution

The fourth proportional to 20,654.93, 28,501.28 and 11,578.20 is: 15,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.93 : 28,501.28 = 11,578.20 : x
  2. Step 2: Convert to fraction form
    20,654.93/28,501.28 = 11,578.20/x
  3. Step 3: Cross multiply
    20,654.93x = 28,501.28 × 11,578.20
  4. Step 4: Simplify right side
    20,654.93x = 329,993,377.59
  5. Step 5: Solve for x
    x = 329,993,377.59/20,654.93
  6. Step 6: Final answer
    x = 15,976.49

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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.