Home / 15,427.62-21,290.08-8,354.04

Finding the Fourth Proportional to 15,427.62, 21,290.08 and 8,354.04

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Solution

The fourth proportional to 15,427.62, 21,290.08 and 8,354.04 is: 11,528.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.62 : 21,290.08 = 8,354.04 : x
  2. Step 2: Convert to fraction form
    15,427.62/21,290.08 = 8,354.04/x
  3. Step 3: Cross multiply
    15,427.62x = 21,290.08 × 8,354.04
  4. Step 4: Simplify right side
    15,427.62x = 177,858,143.37
  5. Step 5: Solve for x
    x = 177,858,143.37/15,427.62
  6. Step 6: Final answer
    x = 11,528.55

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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.