Home / 20,111.29-27,759.39-12,154.12

Finding the Fourth Proportional to 20,111.29, 27,759.39 and 12,154.12

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Solution

The fourth proportional to 20,111.29, 27,759.39 and 12,154.12 is: 16,776.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.29 : 27,759.39 = 12,154.12 : x
  2. Step 2: Convert to fraction form
    20,111.29/27,759.39 = 12,154.12/x
  3. Step 3: Cross multiply
    20,111.29x = 27,759.39 × 12,154.12
  4. Step 4: Simplify right side
    20,111.29x = 337,390,957.19
  5. Step 5: Solve for x
    x = 337,390,957.19/20,111.29
  6. Step 6: Final answer
    x = 16,776.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.