Home / 20,173.23-27,840.45-11,221.58

Finding the Fourth Proportional to 20,173.23, 27,840.45 and 11,221.58

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Solution

The fourth proportional to 20,173.23, 27,840.45 and 11,221.58 is: 15,486.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.23 : 27,840.45 = 11,221.58 : x
  2. Step 2: Convert to fraction form
    20,173.23/27,840.45 = 11,221.58/x
  3. Step 3: Cross multiply
    20,173.23x = 27,840.45 × 11,221.58
  4. Step 4: Simplify right side
    20,173.23x = 312,413,697.71
  5. Step 5: Solve for x
    x = 312,413,697.71/20,173.23
  6. Step 6: Final answer
    x = 15,486.55

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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.