Home / 15,890.29-21,928.58-8,816.70

Finding the Fourth Proportional to 15,890.29, 21,928.58 and 8,816.70

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Solution

The fourth proportional to 15,890.29, 21,928.58 and 8,816.70 is: 12,167.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.29 : 21,928.58 = 8,816.70 : x
  2. Step 2: Convert to fraction form
    15,890.29/21,928.58 = 8,816.70/x
  3. Step 3: Cross multiply
    15,890.29x = 21,928.58 × 8,816.70
  4. Step 4: Simplify right side
    15,890.29x = 193,337,667.20
  5. Step 5: Solve for x
    x = 193,337,667.20/15,890.29
  6. Step 6: Final answer
    x = 12,167.03

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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.