Home / 15,971.82-21,993.57-15,617.79

Finding the Fourth Proportional to 15,971.82, 21,993.57 and 15,617.79

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Solution

The fourth proportional to 15,971.82, 21,993.57 and 15,617.79 is: 21,506.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,971.82 : 21,993.57 = 15,617.79 : x
  2. Step 2: Convert to fraction form
    15,971.82/21,993.57 = 15,617.79/x
  3. Step 3: Cross multiply
    15,971.82x = 21,993.57 × 15,617.79
  4. Step 4: Simplify right side
    15,971.82x = 343,490,957.61
  5. Step 5: Solve for x
    x = 343,490,957.61/15,971.82
  6. Step 6: Final answer
    x = 21,506.06

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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.