Home / 15,921.44-21,972.12-8,848.16

Finding the Fourth Proportional to 15,921.44, 21,972.12 and 8,848.16

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Solution

The fourth proportional to 15,921.44, 21,972.12 and 8,848.16 is: 12,210.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.44 : 21,972.12 = 8,848.16 : x
  2. Step 2: Convert to fraction form
    15,921.44/21,972.12 = 8,848.16/x
  3. Step 3: Cross multiply
    15,921.44x = 21,972.12 × 8,848.16
  4. Step 4: Simplify right side
    15,921.44x = 194,412,833.30
  5. Step 5: Solve for x
    x = 194,412,833.30/15,921.44
  6. Step 6: Final answer
    x = 12,210.76

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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.