Home / 18,949.81-28,424.90-7,260.25

Finding the Fourth Proportional to 18,949.81, 28,424.90 and 7,260.25

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Solution

The fourth proportional to 18,949.81, 28,424.90 and 7,260.25 is: 10,890.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.81 : 28,424.90 = 7,260.25 : x
  2. Step 2: Convert to fraction form
    18,949.81/28,424.90 = 7,260.25/x
  3. Step 3: Cross multiply
    18,949.81x = 28,424.90 × 7,260.25
  4. Step 4: Simplify right side
    18,949.81x = 206,371,880.23
  5. Step 5: Solve for x
    x = 206,371,880.23/18,949.81
  6. Step 6: Final answer
    x = 10,890.45

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Similar ratio
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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.