Home / 13,211.12-18,232.49-7,243.95

Finding the Fourth Proportional to 13,211.12, 18,232.49 and 7,243.95

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Solution

The fourth proportional to 13,211.12, 18,232.49 and 7,243.95 is: 9,997.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.12 : 18,232.49 = 7,243.95 : x
  2. Step 2: Convert to fraction form
    13,211.12/18,232.49 = 7,243.95/x
  3. Step 3: Cross multiply
    13,211.12x = 18,232.49 × 7,243.95
  4. Step 4: Simplify right side
    13,211.12x = 132,075,264.05
  5. Step 5: Solve for x
    x = 132,075,264.05/13,211.12
  6. Step 6: Final answer
    x = 9,997.28

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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.