Home / 15,938.92-21,993.15-8,865.19

Finding the Fourth Proportional to 15,938.92, 21,993.15 and 8,865.19

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Solution

The fourth proportional to 15,938.92, 21,993.15 and 8,865.19 is: 12,232.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,938.92 : 21,993.15 = 8,865.19 : x
  2. Step 2: Convert to fraction form
    15,938.92/21,993.15 = 8,865.19/x
  3. Step 3: Cross multiply
    15,938.92x = 21,993.15 × 8,865.19
  4. Step 4: Simplify right side
    15,938.92x = 194,973,453.45
  5. Step 5: Solve for x
    x = 194,973,453.45/15,938.92
  6. Step 6: Final answer
    x = 12,232.54

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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.