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Finding the Fourth Proportional to 15,910.92, 21,956.76 and 8,837.28

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Solution

The fourth proportional to 15,910.92, 21,956.76 and 8,837.28 is: 12,195.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.92 : 21,956.76 = 8,837.28 : x
  2. Step 2: Convert to fraction form
    15,910.92/21,956.76 = 8,837.28/x
  3. Step 3: Cross multiply
    15,910.92x = 21,956.76 × 8,837.28
  4. Step 4: Simplify right side
    15,910.92x = 194,038,036.01
  5. Step 5: Solve for x
    x = 194,038,036.01/15,910.92
  6. Step 6: Final answer
    x = 12,195.27

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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.