Home / 15,107.18-20,850.39-8,818.34

Finding the Fourth Proportional to 15,107.18, 20,850.39 and 8,818.34

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Solution

The fourth proportional to 15,107.18, 20,850.39 and 8,818.34 is: 12,170.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.18 : 20,850.39 = 8,818.34 : x
  2. Step 2: Convert to fraction form
    15,107.18/20,850.39 = 8,818.34/x
  3. Step 3: Cross multiply
    15,107.18x = 20,850.39 × 8,818.34
  4. Step 4: Simplify right side
    15,107.18x = 183,865,828.15
  5. Step 5: Solve for x
    x = 183,865,828.15/15,107.18
  6. Step 6: Final answer
    x = 12,170.76

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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.