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Finding the Fourth Proportional to 18,240.70, 27,277.67 and 13,259.81

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Solution

The fourth proportional to 18,240.70, 27,277.67 and 13,259.81 is: 19,829.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.70 : 27,277.67 = 13,259.81 : x
  2. Step 2: Convert to fraction form
    18,240.70/27,277.67 = 13,259.81/x
  3. Step 3: Cross multiply
    18,240.70x = 27,277.67 × 13,259.81
  4. Step 4: Simplify right side
    18,240.70x = 361,696,518.76
  5. Step 5: Solve for x
    x = 361,696,518.76/18,240.70
  6. Step 6: Final answer
    x = 19,829.09

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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.