Home / 13,434.21-20,148.68-12,767.42

Finding the Fourth Proportional to 13,434.21, 20,148.68 and 12,767.42

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Solution

The fourth proportional to 13,434.21, 20,148.68 and 12,767.42 is: 19,148.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.21 : 20,148.68 = 12,767.42 : x
  2. Step 2: Convert to fraction form
    13,434.21/20,148.68 = 12,767.42/x
  3. Step 3: Cross multiply
    13,434.21x = 20,148.68 × 12,767.42
  4. Step 4: Simplify right side
    13,434.21x = 257,246,591.18
  5. Step 5: Solve for x
    x = 257,246,591.18/13,434.21
  6. Step 6: Final answer
    x = 19,148.63

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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.