Home / 15,017.13-20,745.62-11,851.45

Finding the Fourth Proportional to 15,017.13, 20,745.62 and 11,851.45

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Solution

The fourth proportional to 15,017.13, 20,745.62 and 11,851.45 is: 16,372.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.13 : 20,745.62 = 11,851.45 : x
  2. Step 2: Convert to fraction form
    15,017.13/20,745.62 = 11,851.45/x
  3. Step 3: Cross multiply
    15,017.13x = 20,745.62 × 11,851.45
  4. Step 4: Simplify right side
    15,017.13x = 245,865,611.47
  5. Step 5: Solve for x
    x = 245,865,611.47/15,017.13
  6. Step 6: Final answer
    x = 16,372.34

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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.