Home / 20,173.41-27,838.59-11,220.72

Finding the Fourth Proportional to 20,173.41, 27,838.59 and 11,220.72

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Solution

The fourth proportional to 20,173.41, 27,838.59 and 11,220.72 is: 15,484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.41 : 27,838.59 = 11,220.72 : x
  2. Step 2: Convert to fraction form
    20,173.41/27,838.59 = 11,220.72/x
  3. Step 3: Cross multiply
    20,173.41x = 27,838.59 × 11,220.72
  4. Step 4: Simplify right side
    20,173.41x = 312,369,023.58
  5. Step 5: Solve for x
    x = 312,369,023.58/20,173.41
  6. Step 6: Final answer
    x = 15,484.20

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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.