Home / 19,991.80-27,588.18-11,038.60

Finding the Fourth Proportional to 19,991.80, 27,588.18 and 11,038.60

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Solution

The fourth proportional to 19,991.80, 27,588.18 and 11,038.60 is: 15,232.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.80 : 27,588.18 = 11,038.60 : x
  2. Step 2: Convert to fraction form
    19,991.80/27,588.18 = 11,038.60/x
  3. Step 3: Cross multiply
    19,991.80x = 27,588.18 × 11,038.60
  4. Step 4: Simplify right side
    19,991.80x = 304,534,883.75
  5. Step 5: Solve for x
    x = 304,534,883.75/19,991.80
  6. Step 6: Final answer
    x = 15,232.99

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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.