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Finding the Fourth Proportional to 19,647.80, 29,471.70 and 14,982.20

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Solution

The fourth proportional to 19,647.80, 29,471.70 and 14,982.20 is: 22,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,647.80 : 29,471.70 = 14,982.20 : x
  2. Step 2: Convert to fraction form
    19,647.80/29,471.70 = 14,982.20/x
  3. Step 3: Cross multiply
    19,647.80x = 29,471.70 × 14,982.20
  4. Step 4: Simplify right side
    19,647.80x = 441,550,903.74
  5. Step 5: Solve for x
    x = 441,550,903.74/19,647.80
  6. Step 6: Final answer
    x = 22,473.30

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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.