Home / 13,726.83-20,589.84-12,915.21

Finding the Fourth Proportional to 13,726.83, 20,589.84 and 12,915.21

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Solution

The fourth proportional to 13,726.83, 20,589.84 and 12,915.21 is: 19,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.83 : 20,589.84 = 12,915.21 : x
  2. Step 2: Convert to fraction form
    13,726.83/20,589.84 = 12,915.21/x
  3. Step 3: Cross multiply
    13,726.83x = 20,589.84 × 12,915.21
  4. Step 4: Simplify right side
    13,726.83x = 265,922,107.47
  5. Step 5: Solve for x
    x = 265,922,107.47/13,726.83
  6. Step 6: Final answer
    x = 19,372.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.