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Finding the Fourth Proportional to 15,844, 21,864.80 and 8,771.04

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Solution

The fourth proportional to 15,844, 21,864.80 and 8,771.04 is: 12,104.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844 : 21,864.80 = 8,771.04 : x
  2. Step 2: Convert to fraction form
    15,844/21,864.80 = 8,771.04/x
  3. Step 3: Cross multiply
    15,844x = 21,864.80 × 8,771.04
  4. Step 4: Simplify right side
    15,844x = 191,777,035.39
  5. Step 5: Solve for x
    x = 191,777,035.39/15,844
  6. Step 6: Final answer
    x = 12,104.08

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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.