Home / 19,933.80-27,507.87-11,980.40

Finding the Fourth Proportional to 19,933.80, 27,507.87 and 11,980.40

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Solution

The fourth proportional to 19,933.80, 27,507.87 and 11,980.40 is: 16,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,933.80 : 27,507.87 = 11,980.40 : x
  2. Step 2: Convert to fraction form
    19,933.80/27,507.87 = 11,980.40/x
  3. Step 3: Cross multiply
    19,933.80x = 27,507.87 × 11,980.40
  4. Step 4: Simplify right side
    19,933.80x = 329,555,285.75
  5. Step 5: Solve for x
    x = 329,555,285.75/19,933.80
  6. Step 6: Final answer
    x = 16,532.49

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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.