Home / 19,286.40-28,929.60-10,051.20

Finding the Fourth Proportional to 19,286.40, 28,929.60 and 10,051.20

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Solution

The fourth proportional to 19,286.40, 28,929.60 and 10,051.20 is: 15,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.40 : 28,929.60 = 10,051.20 : x
  2. Step 2: Convert to fraction form
    19,286.40/28,929.60 = 10,051.20/x
  3. Step 3: Cross multiply
    19,286.40x = 28,929.60 × 10,051.20
  4. Step 4: Simplify right side
    19,286.40x = 290,777,195.52
  5. Step 5: Solve for x
    x = 290,777,195.52/19,286.40
  6. Step 6: Final answer
    x = 15,076.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.