Home / 13,022.15-17,969.28-7,278.53

Finding the Fourth Proportional to 13,022.15, 17,969.28 and 7,278.53

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Solution

The fourth proportional to 13,022.15, 17,969.28 and 7,278.53 is: 10,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,022.15 : 17,969.28 = 7,278.53 : x
  2. Step 2: Convert to fraction form
    13,022.15/17,969.28 = 7,278.53/x
  3. Step 3: Cross multiply
    13,022.15x = 17,969.28 × 7,278.53
  4. Step 4: Simplify right side
    13,022.15x = 130,789,943.56
  5. Step 5: Solve for x
    x = 130,789,943.56/13,022.15
  6. Step 6: Final answer
    x = 10,043.65

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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.