Home / 13,119.90-18,104.93-7,151.44

Finding the Fourth Proportional to 13,119.90, 18,104.93 and 7,151.44

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Solution

The fourth proportional to 13,119.90, 18,104.93 and 7,151.44 is: 9,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.90 : 18,104.93 = 7,151.44 : x
  2. Step 2: Convert to fraction form
    13,119.90/18,104.93 = 7,151.44/x
  3. Step 3: Cross multiply
    13,119.90x = 18,104.93 × 7,151.44
  4. Step 4: Simplify right side
    13,119.90x = 129,476,320.60
  5. Step 5: Solve for x
    x = 129,476,320.60/13,119.90
  6. Step 6: Final answer
    x = 9,868.70

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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.