Home / 15,288.84-21,099.38-8,574.09

Finding the Fourth Proportional to 15,288.84, 21,099.38 and 8,574.09

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Solution

The fourth proportional to 15,288.84, 21,099.38 and 8,574.09 is: 11,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.84 : 21,099.38 = 8,574.09 : x
  2. Step 2: Convert to fraction form
    15,288.84/21,099.38 = 8,574.09/x
  3. Step 3: Cross multiply
    15,288.84x = 21,099.38 × 8,574.09
  4. Step 4: Simplify right side
    15,288.84x = 180,907,940.19
  5. Step 5: Solve for x
    x = 180,907,940.19/15,288.84
  6. Step 6: Final answer
    x = 11,832.68

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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.