Home / 15,713.89-21,685.54-8,544.22

Finding the Fourth Proportional to 15,713.89, 21,685.54 and 8,544.22

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Solution

The fourth proportional to 15,713.89, 21,685.54 and 8,544.22 is: 11,791.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,713.89 : 21,685.54 = 8,544.22 : x
  2. Step 2: Convert to fraction form
    15,713.89/21,685.54 = 8,544.22/x
  3. Step 3: Cross multiply
    15,713.89x = 21,685.54 × 8,544.22
  4. Step 4: Simplify right side
    15,713.89x = 185,286,024.58
  5. Step 5: Solve for x
    x = 185,286,024.58/15,713.89
  6. Step 6: Final answer
    x = 11,791.23

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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.