Home / 20,342.91-30,430.11-19,098.75

Finding the Fourth Proportional to 20,342.91, 30,430.11 and 19,098.75

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Solution

The fourth proportional to 20,342.91, 30,430.11 and 19,098.75 is: 28,569.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.91 : 30,430.11 = 19,098.75 : x
  2. Step 2: Convert to fraction form
    20,342.91/30,430.11 = 19,098.75/x
  3. Step 3: Cross multiply
    20,342.91x = 30,430.11 × 19,098.75
  4. Step 4: Simplify right side
    20,342.91x = 581,177,063.36
  5. Step 5: Solve for x
    x = 581,177,063.36/20,342.91
  6. Step 6: Final answer
    x = 28,569.02

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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.