Home / 20,398.99-30,569.31-11,615.77

Finding the Fourth Proportional to 20,398.99, 30,569.31 and 11,615.77

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Solution

The fourth proportional to 20,398.99, 30,569.31 and 11,615.77 is: 17,407.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.99 : 30,569.31 = 11,615.77 : x
  2. Step 2: Convert to fraction form
    20,398.99/30,569.31 = 11,615.77/x
  3. Step 3: Cross multiply
    20,398.99x = 30,569.31 × 11,615.77
  4. Step 4: Simplify right side
    20,398.99x = 355,086,074.02
  5. Step 5: Solve for x
    x = 355,086,074.02/20,398.99
  6. Step 6: Final answer
    x = 17,407.04

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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.