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Finding the Fourth Proportional to 15,101.46, 20,839.44 and 8,387.51

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Solution

The fourth proportional to 15,101.46, 20,839.44 and 8,387.51 is: 11,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.46 : 20,839.44 = 8,387.51 : x
  2. Step 2: Convert to fraction form
    15,101.46/20,839.44 = 8,387.51/x
  3. Step 3: Cross multiply
    15,101.46x = 20,839.44 × 8,387.51
  4. Step 4: Simplify right side
    15,101.46x = 174,791,021.56
  5. Step 5: Solve for x
    x = 174,791,021.56/15,101.46
  6. Step 6: Final answer
    x = 11,574.45

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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.