Home / 13,200.78-18,217.10-7,232.56

Finding the Fourth Proportional to 13,200.78, 18,217.10 and 7,232.56

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Solution

The fourth proportional to 13,200.78, 18,217.10 and 7,232.56 is: 9,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.78 : 18,217.10 = 7,232.56 : x
  2. Step 2: Convert to fraction form
    13,200.78/18,217.10 = 7,232.56/x
  3. Step 3: Cross multiply
    13,200.78x = 18,217.10 × 7,232.56
  4. Step 4: Simplify right side
    13,200.78x = 131,756,268.78
  5. Step 5: Solve for x
    x = 131,756,268.78/13,200.78
  6. Step 6: Final answer
    x = 9,980.95

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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.