Home / 15,890.20-21,927.38-8,816.06

Finding the Fourth Proportional to 15,890.20, 21,927.38 and 8,816.06

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Solution

The fourth proportional to 15,890.20, 21,927.38 and 8,816.06 is: 12,165.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.20 : 21,927.38 = 8,816.06 : x
  2. Step 2: Convert to fraction form
    15,890.20/21,927.38 = 8,816.06/x
  3. Step 3: Cross multiply
    15,890.20x = 21,927.38 × 8,816.06
  4. Step 4: Simplify right side
    15,890.20x = 193,313,108.46
  5. Step 5: Solve for x
    x = 193,313,108.46/15,890.20
  6. Step 6: Final answer
    x = 12,165.56

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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.