Home / 18,306.05-27,427.73-9,991.90

Finding the Fourth Proportional to 18,306.05, 27,427.73 and 9,991.90

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Solution

The fourth proportional to 18,306.05, 27,427.73 and 9,991.90 is: 14,970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.05 : 27,427.73 = 9,991.90 : x
  2. Step 2: Convert to fraction form
    18,306.05/27,427.73 = 9,991.90/x
  3. Step 3: Cross multiply
    18,306.05x = 27,427.73 × 9,991.90
  4. Step 4: Simplify right side
    18,306.05x = 274,055,119.71
  5. Step 5: Solve for x
    x = 274,055,119.71/18,306.05
  6. Step 6: Final answer
    x = 14,970.74

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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.