Home / 13,887.45-20,818.17-6,770.10

Finding the Fourth Proportional to 13,887.45, 20,818.17 and 6,770.10

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Solution

The fourth proportional to 13,887.45, 20,818.17 and 6,770.10 is: 10,148.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.45 : 20,818.17 = 6,770.10 : x
  2. Step 2: Convert to fraction form
    13,887.45/20,818.17 = 6,770.10/x
  3. Step 3: Cross multiply
    13,887.45x = 20,818.17 × 6,770.10
  4. Step 4: Simplify right side
    13,887.45x = 140,941,092.72
  5. Step 5: Solve for x
    x = 140,941,092.72/13,887.45
  6. Step 6: Final answer
    x = 10,148.81

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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.