Home / 18,139.69-25,033.05-10,968.58

Finding the Fourth Proportional to 18,139.69, 25,033.05 and 10,968.58

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Solution

The fourth proportional to 18,139.69, 25,033.05 and 10,968.58 is: 15,136.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.69 : 25,033.05 = 10,968.58 : x
  2. Step 2: Convert to fraction form
    18,139.69/25,033.05 = 10,968.58/x
  3. Step 3: Cross multiply
    18,139.69x = 25,033.05 × 10,968.58
  4. Step 4: Simplify right side
    18,139.69x = 274,577,011.57
  5. Step 5: Solve for x
    x = 274,577,011.57/18,139.69
  6. Step 6: Final answer
    x = 15,136.81

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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.