Home / 12,169.70-18,288.62-7,240.10

Finding the Fourth Proportional to 12,169.70, 18,288.62 and 7,240.10

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Solution

The fourth proportional to 12,169.70, 18,288.62 and 7,240.10 is: 10,880.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.70 : 18,288.62 = 7,240.10 : x
  2. Step 2: Convert to fraction form
    12,169.70/18,288.62 = 7,240.10/x
  3. Step 3: Cross multiply
    12,169.70x = 18,288.62 × 7,240.10
  4. Step 4: Simplify right side
    12,169.70x = 132,411,364.32
  5. Step 5: Solve for x
    x = 132,411,364.32/12,169.70
  6. Step 6: Final answer
    x = 10,880.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.