Home / 15,854.38-21,878.88-8,684.26

Finding the Fourth Proportional to 15,854.38, 21,878.88 and 8,684.26

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Solution

The fourth proportional to 15,854.38, 21,878.88 and 8,684.26 is: 11,984.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,854.38 : 21,878.88 = 8,684.26 : x
  2. Step 2: Convert to fraction form
    15,854.38/21,878.88 = 8,684.26/x
  3. Step 3: Cross multiply
    15,854.38x = 21,878.88 × 8,684.26
  4. Step 4: Simplify right side
    15,854.38x = 190,001,882.43
  5. Step 5: Solve for x
    x = 190,001,882.43/15,854.38
  6. Step 6: Final answer
    x = 11,984.19

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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.