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Finding the Fourth Proportional to 18,547.97, 27,829.07 and 11,157.66

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Solution

The fourth proportional to 18,547.97, 27,829.07 and 11,157.66 is: 16,740.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,547.97 : 27,829.07 = 11,157.66 : x
  2. Step 2: Convert to fraction form
    18,547.97/27,829.07 = 11,157.66/x
  3. Step 3: Cross multiply
    18,547.97x = 27,829.07 × 11,157.66
  4. Step 4: Simplify right side
    18,547.97x = 310,507,245.39
  5. Step 5: Solve for x
    x = 310,507,245.39/18,547.97
  6. Step 6: Final answer
    x = 16,740.77

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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.