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Finding the Fourth Proportional to 18,113.81, 27,178.54 and 9,799.68

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Solution

The fourth proportional to 18,113.81, 27,178.54 and 9,799.68 is: 14,703.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.81 : 27,178.54 = 9,799.68 : x
  2. Step 2: Convert to fraction form
    18,113.81/27,178.54 = 9,799.68/x
  3. Step 3: Cross multiply
    18,113.81x = 27,178.54 × 9,799.68
  4. Step 4: Simplify right side
    18,113.81x = 266,341,013.82
  5. Step 5: Solve for x
    x = 266,341,013.82/18,113.81
  6. Step 6: Final answer
    x = 14,703.75

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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.