Home / 20,230.19-27,915.35-11,730.54

Finding the Fourth Proportional to 20,230.19, 27,915.35 and 11,730.54

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Solution

The fourth proportional to 20,230.19, 27,915.35 and 11,730.54 is: 16,186.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.19 : 27,915.35 = 11,730.54 : x
  2. Step 2: Convert to fraction form
    20,230.19/27,915.35 = 11,730.54/x
  3. Step 3: Cross multiply
    20,230.19x = 27,915.35 × 11,730.54
  4. Step 4: Simplify right side
    20,230.19x = 327,462,071.14
  5. Step 5: Solve for x
    x = 327,462,071.14/20,230.19
  6. Step 6: Final answer
    x = 16,186.81

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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.