Home / 13,144.74-18,139.49-7,176.45

Finding the Fourth Proportional to 13,144.74, 18,139.49 and 7,176.45

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Solution

The fourth proportional to 13,144.74, 18,139.49 and 7,176.45 is: 9,903.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.74 : 18,139.49 = 7,176.45 : x
  2. Step 2: Convert to fraction form
    13,144.74/18,139.49 = 7,176.45/x
  3. Step 3: Cross multiply
    13,144.74x = 18,139.49 × 7,176.45
  4. Step 4: Simplify right side
    13,144.74x = 130,177,107.13
  5. Step 5: Solve for x
    x = 130,177,107.13/13,144.74
  6. Step 6: Final answer
    x = 9,903.36

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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.