Home / 13,240.05-18,270.52-7,270.55

Finding the Fourth Proportional to 13,240.05, 18,270.52 and 7,270.55

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Solution

The fourth proportional to 13,240.05, 18,270.52 and 7,270.55 is: 10,032.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.05 : 18,270.52 = 7,270.55 : x
  2. Step 2: Convert to fraction form
    13,240.05/18,270.52 = 7,270.55/x
  3. Step 3: Cross multiply
    13,240.05x = 18,270.52 × 7,270.55
  4. Step 4: Simplify right side
    13,240.05x = 132,836,729.19
  5. Step 5: Solve for x
    x = 132,836,729.19/13,240.05
  6. Step 6: Final answer
    x = 10,032.95

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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.