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Finding the Fourth Proportional to 19,510.80, 29,266.12 and 5,659.80

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Solution

The fourth proportional to 19,510.80, 29,266.12 and 5,659.80 is: 8,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,510.80 : 29,266.12 = 5,659.80 : x
  2. Step 2: Convert to fraction form
    19,510.80/29,266.12 = 5,659.80/x
  3. Step 3: Cross multiply
    19,510.80x = 29,266.12 × 5,659.80
  4. Step 4: Simplify right side
    19,510.80x = 165,640,385.98
  5. Step 5: Solve for x
    x = 165,640,385.98/19,510.80
  6. Step 6: Final answer
    x = 8,489.68

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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.