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Finding the Fourth Proportional to 18,156.96, 27,212.40 and 7,053.12

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Solution

The fourth proportional to 18,156.96, 27,212.40 and 7,053.12 is: 10,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.96 : 27,212.40 = 7,053.12 : x
  2. Step 2: Convert to fraction form
    18,156.96/27,212.40 = 7,053.12/x
  3. Step 3: Cross multiply
    18,156.96x = 27,212.40 × 7,053.12
  4. Step 4: Simplify right side
    18,156.96x = 191,932,322.69
  5. Step 5: Solve for x
    x = 191,932,322.69/18,156.96
  6. Step 6: Final answer
    x = 10,570.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.