Home / 15,921.92-21,981.84-10,548.90

Finding the Fourth Proportional to 15,921.92, 21,981.84 and 10,548.90

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Solution

The fourth proportional to 15,921.92, 21,981.84 and 10,548.90 is: 14,563.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.92 : 21,981.84 = 10,548.90 : x
  2. Step 2: Convert to fraction form
    15,921.92/21,981.84 = 10,548.90/x
  3. Step 3: Cross multiply
    15,921.92x = 21,981.84 × 10,548.90
  4. Step 4: Simplify right side
    15,921.92x = 231,884,231.98
  5. Step 5: Solve for x
    x = 231,884,231.98/15,921.92
  6. Step 6: Final answer
    x = 14,563.84

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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.