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Finding the Fourth Proportional to 18,191.25, 27,301.59 and 9,428.67

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Solution

The fourth proportional to 18,191.25, 27,301.59 and 9,428.67 is: 14,150.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.25 : 27,301.59 = 9,428.67 : x
  2. Step 2: Convert to fraction form
    18,191.25/27,301.59 = 9,428.67/x
  3. Step 3: Cross multiply
    18,191.25x = 27,301.59 × 9,428.67
  4. Step 4: Simplify right side
    18,191.25x = 257,417,682.59
  5. Step 5: Solve for x
    x = 257,417,682.59/18,191.25
  6. Step 6: Final answer
    x = 14,150.63

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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.