Home / 15,890.25-21,928.67-8,816.79

Finding the Fourth Proportional to 15,890.25, 21,928.67 and 8,816.79

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Solution

The fourth proportional to 15,890.25, 21,928.67 and 8,816.79 is: 12,167.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.25 : 21,928.67 = 8,816.79 : x
  2. Step 2: Convert to fraction form
    15,890.25/21,928.67 = 8,816.79/x
  3. Step 3: Cross multiply
    15,890.25x = 21,928.67 × 8,816.79
  4. Step 4: Simplify right side
    15,890.25x = 193,340,478.37
  5. Step 5: Solve for x
    x = 193,340,478.37/15,890.25
  6. Step 6: Final answer
    x = 12,167.24

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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.