Home / 13,756.42-18,995.49-8,729.56

Finding the Fourth Proportional to 13,756.42, 18,995.49 and 8,729.56

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Solution

The fourth proportional to 13,756.42, 18,995.49 and 8,729.56 is: 12,054.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.42 : 18,995.49 = 8,729.56 : x
  2. Step 2: Convert to fraction form
    13,756.42/18,995.49 = 8,729.56/x
  3. Step 3: Cross multiply
    13,756.42x = 18,995.49 × 8,729.56
  4. Step 4: Simplify right side
    13,756.42x = 165,822,269.68
  5. Step 5: Solve for x
    x = 165,822,269.68/13,756.42
  6. Step 6: Final answer
    x = 12,054.17

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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.