Home / 20,119.66-27,775.12-12,570.18

Finding the Fourth Proportional to 20,119.66, 27,775.12 and 12,570.18

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Solution

The fourth proportional to 20,119.66, 27,775.12 and 12,570.18 is: 17,353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.66 : 27,775.12 = 12,570.18 : x
  2. Step 2: Convert to fraction form
    20,119.66/27,775.12 = 12,570.18/x
  3. Step 3: Cross multiply
    20,119.66x = 27,775.12 × 12,570.18
  4. Step 4: Simplify right side
    20,119.66x = 349,138,257.92
  5. Step 5: Solve for x
    x = 349,138,257.92/20,119.66
  6. Step 6: Final answer
    x = 17,353.09

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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.