Home / 12,512.51-18,787.22-6,976.67

Finding the Fourth Proportional to 12,512.51, 18,787.22 and 6,976.67

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Solution

The fourth proportional to 12,512.51, 18,787.22 and 6,976.67 is: 10,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.51 : 18,787.22 = 6,976.67 : x
  2. Step 2: Convert to fraction form
    12,512.51/18,787.22 = 6,976.67/x
  3. Step 3: Cross multiply
    12,512.51x = 18,787.22 × 6,976.67
  4. Step 4: Simplify right side
    12,512.51x = 131,072,105.34
  5. Step 5: Solve for x
    x = 131,072,105.34/12,512.51
  6. Step 6: Final answer
    x = 10,475.29

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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.