Home / 15,731.25-23,704.43-13,017.75

Finding the Fourth Proportional to 15,731.25, 23,704.43 and 13,017.75

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Solution

The fourth proportional to 15,731.25, 23,704.43 and 13,017.75 is: 19,615.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.25 : 23,704.43 = 13,017.75 : x
  2. Step 2: Convert to fraction form
    15,731.25/23,704.43 = 13,017.75/x
  3. Step 3: Cross multiply
    15,731.25x = 23,704.43 × 13,017.75
  4. Step 4: Simplify right side
    15,731.25x = 308,578,299.49
  5. Step 5: Solve for x
    x = 308,578,299.49/15,731.25
  6. Step 6: Final answer
    x = 19,615.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.