Home / 20,158.40-27,807.97-11,977.33

Finding the Fourth Proportional to 20,158.40, 27,807.97 and 11,977.33

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Solution

The fourth proportional to 20,158.40, 27,807.97 and 11,977.33 is: 16,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.40 : 27,807.97 = 11,977.33 : x
  2. Step 2: Convert to fraction form
    20,158.40/27,807.97 = 11,977.33/x
  3. Step 3: Cross multiply
    20,158.40x = 27,807.97 × 11,977.33
  4. Step 4: Simplify right side
    20,158.40x = 333,065,233.32
  5. Step 5: Solve for x
    x = 333,065,233.32/20,158.40
  6. Step 6: Final answer
    x = 16,522.40

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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.