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Finding the Fourth Proportional to 15,066.81, 20,786.27 and 9,398.25

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Solution

The fourth proportional to 15,066.81, 20,786.27 and 9,398.25 is: 12,965.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,066.81 : 20,786.27 = 9,398.25 : x
  2. Step 2: Convert to fraction form
    15,066.81/20,786.27 = 9,398.25/x
  3. Step 3: Cross multiply
    15,066.81x = 20,786.27 × 9,398.25
  4. Step 4: Simplify right side
    15,066.81x = 195,354,515.04
  5. Step 5: Solve for x
    x = 195,354,515.04/15,066.81
  6. Step 6: Final answer
    x = 12,965.88

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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.