Home / 20,398.93-30,569.23-11,615.69

Finding the Fourth Proportional to 20,398.93, 30,569.23 and 11,615.69

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Solution

The fourth proportional to 20,398.93, 30,569.23 and 11,615.69 is: 17,406.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.93 : 30,569.23 = 11,615.69 : x
  2. Step 2: Convert to fraction form
    20,398.93/30,569.23 = 11,615.69/x
  3. Step 3: Cross multiply
    20,398.93x = 30,569.23 × 11,615.69
  4. Step 4: Simplify right side
    20,398.93x = 355,082,790.16
  5. Step 5: Solve for x
    x = 355,082,790.16/20,398.93
  6. Step 6: Final answer
    x = 17,406.93

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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.