Home / 20,124.60-27,773.13-11,173.09

Finding the Fourth Proportional to 20,124.60, 27,773.13 and 11,173.09

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Solution

The fourth proportional to 20,124.60, 27,773.13 and 11,173.09 is: 15,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.60 : 27,773.13 = 11,173.09 : x
  2. Step 2: Convert to fraction form
    20,124.60/27,773.13 = 11,173.09/x
  3. Step 3: Cross multiply
    20,124.60x = 27,773.13 × 11,173.09
  4. Step 4: Simplify right side
    20,124.60x = 310,311,681.07
  5. Step 5: Solve for x
    x = 310,311,681.07/20,124.60
  6. Step 6: Final answer
    x = 15,419.52

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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.