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Finding the Fourth Proportional to 17,970.84, 26,961.48 and 7,438.92

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Solution

The fourth proportional to 17,970.84, 26,961.48 and 7,438.92 is: 11,160.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,970.84 : 26,961.48 = 7,438.92 : x
  2. Step 2: Convert to fraction form
    17,970.84/26,961.48 = 7,438.92/x
  3. Step 3: Cross multiply
    17,970.84x = 26,961.48 × 7,438.92
  4. Step 4: Simplify right side
    17,970.84x = 200,564,292.80
  5. Step 5: Solve for x
    x = 200,564,292.80/17,970.84
  6. Step 6: Final answer
    x = 11,160.54

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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.