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Finding the Fourth Proportional to 15,774.12, 21,768.09 and 8,604.01

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Solution

The fourth proportional to 15,774.12, 21,768.09 and 8,604.01 is: 11,873.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.12 : 21,768.09 = 8,604.01 : x
  2. Step 2: Convert to fraction form
    15,774.12/21,768.09 = 8,604.01/x
  3. Step 3: Cross multiply
    15,774.12x = 21,768.09 × 8,604.01
  4. Step 4: Simplify right side
    15,774.12x = 187,292,864.04
  5. Step 5: Solve for x
    x = 187,292,864.04/15,774.12
  6. Step 6: Final answer
    x = 11,873.43

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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.