Home / 15,288.23-21,098.48-8,912.52

Finding the Fourth Proportional to 15,288.23, 21,098.48 and 8,912.52

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Solution

The fourth proportional to 15,288.23, 21,098.48 and 8,912.52 is: 12,299.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.23 : 21,098.48 = 8,912.52 : x
  2. Step 2: Convert to fraction form
    15,288.23/21,098.48 = 8,912.52/x
  3. Step 3: Cross multiply
    15,288.23x = 21,098.48 × 8,912.52
  4. Step 4: Simplify right side
    15,288.23x = 188,040,580.41
  5. Step 5: Solve for x
    x = 188,040,580.41/15,288.23
  6. Step 6: Final answer
    x = 12,299.69

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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.