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Finding the Fourth Proportional to 18,110.28, 27,172.93 and 9,780.51

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Solution

The fourth proportional to 18,110.28, 27,172.93 and 9,780.51 is: 14,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,110.28 : 27,172.93 = 9,780.51 : x
  2. Step 2: Convert to fraction form
    18,110.28/27,172.93 = 9,780.51/x
  3. Step 3: Cross multiply
    18,110.28x = 27,172.93 × 9,780.51
  4. Step 4: Simplify right side
    18,110.28x = 265,765,113.59
  5. Step 5: Solve for x
    x = 265,765,113.59/18,110.28
  6. Step 6: Final answer
    x = 14,674.82

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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.