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Finding the Fourth Proportional to 19,009.70, 28,514.55 and 17,065.70

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Solution

The fourth proportional to 19,009.70, 28,514.55 and 17,065.70 is: 25,598.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.70 : 28,514.55 = 17,065.70 : x
  2. Step 2: Convert to fraction form
    19,009.70/28,514.55 = 17,065.70/x
  3. Step 3: Cross multiply
    19,009.70x = 28,514.55 × 17,065.70
  4. Step 4: Simplify right side
    19,009.70x = 486,620,755.94
  5. Step 5: Solve for x
    x = 486,620,755.94/19,009.70
  6. Step 6: Final answer
    x = 25,598.55

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Similar ratio
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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.