Home / 20,364.15-28,099.26-12,408.87

Finding the Fourth Proportional to 20,364.15, 28,099.26 and 12,408.87

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Solution

The fourth proportional to 20,364.15, 28,099.26 and 12,408.87 is: 17,122.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.15 : 28,099.26 = 12,408.87 : x
  2. Step 2: Convert to fraction form
    20,364.15/28,099.26 = 12,408.87/x
  3. Step 3: Cross multiply
    20,364.15x = 28,099.26 × 12,408.87
  4. Step 4: Simplify right side
    20,364.15x = 348,680,064.44
  5. Step 5: Solve for x
    x = 348,680,064.44/20,364.15
  6. Step 6: Final answer
    x = 17,122.25

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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.