Home / 13,817.68-20,726.40-8,272.56

Finding the Fourth Proportional to 13,817.68, 20,726.40 and 8,272.56

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Solution

The fourth proportional to 13,817.68, 20,726.40 and 8,272.56 is: 12,408.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.68 : 20,726.40 = 8,272.56 : x
  2. Step 2: Convert to fraction form
    13,817.68/20,726.40 = 8,272.56/x
  3. Step 3: Cross multiply
    13,817.68x = 20,726.40 × 8,272.56
  4. Step 4: Simplify right side
    13,817.68x = 171,460,387.58
  5. Step 5: Solve for x
    x = 171,460,387.58/13,817.68
  6. Step 6: Final answer
    x = 12,408.77

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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.