Home / 19,110.60-28,665.90-13,205.70

Finding the Fourth Proportional to 19,110.60, 28,665.90 and 13,205.70

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Solution

The fourth proportional to 19,110.60, 28,665.90 and 13,205.70 is: 19,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,110.60 : 28,665.90 = 13,205.70 : x
  2. Step 2: Convert to fraction form
    19,110.60/28,665.90 = 13,205.70/x
  3. Step 3: Cross multiply
    19,110.60x = 28,665.90 × 13,205.70
  4. Step 4: Simplify right side
    19,110.60x = 378,553,275.63
  5. Step 5: Solve for x
    x = 378,553,275.63/19,110.60
  6. Step 6: Final answer
    x = 19,808.55

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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.