Home / 13,220.19-18,243.83-7,251.95

Finding the Fourth Proportional to 13,220.19, 18,243.83 and 7,251.95

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Solution

The fourth proportional to 13,220.19, 18,243.83 and 7,251.95 is: 10,007.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.19 : 18,243.83 = 7,251.95 : x
  2. Step 2: Convert to fraction form
    13,220.19/18,243.83 = 7,251.95/x
  3. Step 3: Cross multiply
    13,220.19x = 18,243.83 × 7,251.95
  4. Step 4: Simplify right side
    13,220.19x = 132,303,215.49
  5. Step 5: Solve for x
    x = 132,303,215.49/13,220.19
  6. Step 6: Final answer
    x = 10,007.66

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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.