Home / 20,528.82-28,329.80-11,097.38

Finding the Fourth Proportional to 20,528.82, 28,329.80 and 11,097.38

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Solution

The fourth proportional to 20,528.82, 28,329.80 and 11,097.38 is: 15,314.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.82 : 28,329.80 = 11,097.38 : x
  2. Step 2: Convert to fraction form
    20,528.82/28,329.80 = 11,097.38/x
  3. Step 3: Cross multiply
    20,528.82x = 28,329.80 × 11,097.38
  4. Step 4: Simplify right side
    20,528.82x = 314,386,358.79
  5. Step 5: Solve for x
    x = 314,386,358.79/20,528.82
  6. Step 6: Final answer
    x = 15,314.39

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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.