Home / 15,971.88-22,041.15-9,261.39

Finding the Fourth Proportional to 15,971.88, 22,041.15 and 9,261.39

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Solution

The fourth proportional to 15,971.88, 22,041.15 and 9,261.39 is: 12,780.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,971.88 : 22,041.15 = 9,261.39 : x
  2. Step 2: Convert to fraction form
    15,971.88/22,041.15 = 9,261.39/x
  3. Step 3: Cross multiply
    15,971.88x = 22,041.15 × 9,261.39
  4. Step 4: Simplify right side
    15,971.88x = 204,131,686.20
  5. Step 5: Solve for x
    x = 204,131,686.20/15,971.88
  6. Step 6: Final answer
    x = 12,780.69

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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.