Home / 15,122.64-20,869.73-8,408.55

Finding the Fourth Proportional to 15,122.64, 20,869.73 and 8,408.55

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Solution

The fourth proportional to 15,122.64, 20,869.73 and 8,408.55 is: 11,604.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.64 : 20,869.73 = 8,408.55 : x
  2. Step 2: Convert to fraction form
    15,122.64/20,869.73 = 8,408.55/x
  3. Step 3: Cross multiply
    15,122.64x = 20,869.73 × 8,408.55
  4. Step 4: Simplify right side
    15,122.64x = 175,484,168.19
  5. Step 5: Solve for x
    x = 175,484,168.19/15,122.64
  6. Step 6: Final answer
    x = 11,604.07

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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.