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Finding the Fourth Proportional to 19,480.70, 29,221.05 and 5,440.70

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Solution

The fourth proportional to 19,480.70, 29,221.05 and 5,440.70 is: 8,161.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,480.70 : 29,221.05 = 5,440.70 : x
  2. Step 2: Convert to fraction form
    19,480.70/29,221.05 = 5,440.70/x
  3. Step 3: Cross multiply
    19,480.70x = 29,221.05 × 5,440.70
  4. Step 4: Simplify right side
    19,480.70x = 158,982,966.74
  5. Step 5: Solve for x
    x = 158,982,966.74/19,480.70
  6. Step 6: Final answer
    x = 8,161.05

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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.