Home / 10,138.11-15,207.15-3,212.07

Finding the Fourth Proportional to 10,138.11, 15,207.15 and 3,212.07

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Solution

The fourth proportional to 10,138.11, 15,207.15 and 3,212.07 is: 4,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.11 : 15,207.15 = 3,212.07 : x
  2. Step 2: Convert to fraction form
    10,138.11/15,207.15 = 3,212.07/x
  3. Step 3: Cross multiply
    10,138.11x = 15,207.15 × 3,212.07
  4. Step 4: Simplify right side
    10,138.11x = 48,846,430.30
  5. Step 5: Solve for x
    x = 48,846,430.30/10,138.11
  6. Step 6: Final answer
    x = 4,818.10

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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.