Home / 15,338.68-21,171.14-9,375.35

Finding the Fourth Proportional to 15,338.68, 21,171.14 and 9,375.35

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Solution

The fourth proportional to 15,338.68, 21,171.14 and 9,375.35 is: 12,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.68 : 21,171.14 = 9,375.35 : x
  2. Step 2: Convert to fraction form
    15,338.68/21,171.14 = 9,375.35/x
  3. Step 3: Cross multiply
    15,338.68x = 21,171.14 × 9,375.35
  4. Step 4: Simplify right side
    15,338.68x = 198,486,809.22
  5. Step 5: Solve for x
    x = 198,486,809.22/15,338.68
  6. Step 6: Final answer
    x = 12,940.28

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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.