Home / 15,883.66-21,920.44-9,170.52

Finding the Fourth Proportional to 15,883.66, 21,920.44 and 9,170.52

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Solution

The fourth proportional to 15,883.66, 21,920.44 and 9,170.52 is: 12,655.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.66 : 21,920.44 = 9,170.52 : x
  2. Step 2: Convert to fraction form
    15,883.66/21,920.44 = 9,170.52/x
  3. Step 3: Cross multiply
    15,883.66x = 21,920.44 × 9,170.52
  4. Step 4: Simplify right side
    15,883.66x = 201,021,833.43
  5. Step 5: Solve for x
    x = 201,021,833.43/15,883.66
  6. Step 6: Final answer
    x = 12,655.89

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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.