Home / 13,408.02-20,109.42-6,742.74

Finding the Fourth Proportional to 13,408.02, 20,109.42 and 6,742.74

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Solution

The fourth proportional to 13,408.02, 20,109.42 and 6,742.74 is: 10,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.02 : 20,109.42 = 6,742.74 : x
  2. Step 2: Convert to fraction form
    13,408.02/20,109.42 = 6,742.74/x
  3. Step 3: Cross multiply
    13,408.02x = 20,109.42 × 6,742.74
  4. Step 4: Simplify right side
    13,408.02x = 135,592,590.61
  5. Step 5: Solve for x
    x = 135,592,590.61/13,408.02
  6. Step 6: Final answer
    x = 10,112.80

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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.