Home / 19,864.80-29,772.90-8,759.70

Finding the Fourth Proportional to 19,864.80, 29,772.90 and 8,759.70

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Solution

The fourth proportional to 19,864.80, 29,772.90 and 8,759.70 is: 13,128.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.80 : 29,772.90 = 8,759.70 : x
  2. Step 2: Convert to fraction form
    19,864.80/29,772.90 = 8,759.70/x
  3. Step 3: Cross multiply
    19,864.80x = 29,772.90 × 8,759.70
  4. Step 4: Simplify right side
    19,864.80x = 260,801,672.13
  5. Step 5: Solve for x
    x = 260,801,672.13/19,864.80
  6. Step 6: Final answer
    x = 13,128.83

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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.