Home / 20,484.18-28,266.38-11,408.86

Finding the Fourth Proportional to 20,484.18, 28,266.38 and 11,408.86

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Solution

The fourth proportional to 20,484.18, 28,266.38 and 11,408.86 is: 15,743.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.18 : 28,266.38 = 11,408.86 : x
  2. Step 2: Convert to fraction form
    20,484.18/28,266.38 = 11,408.86/x
  3. Step 3: Cross multiply
    20,484.18x = 28,266.38 × 11,408.86
  4. Step 4: Simplify right side
    20,484.18x = 322,487,172.13
  5. Step 5: Solve for x
    x = 322,487,172.13/20,484.18
  6. Step 6: Final answer
    x = 15,743.23

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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.