Home / 28,712.48-43,060.40-11,178.40

Finding the Fourth Proportional to 28,712.48, 43,060.40 and 11,178.40

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Solution

The fourth proportional to 28,712.48, 43,060.40 and 11,178.40 is: 16,764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.48 : 43,060.40 = 11,178.40 : x
  2. Step 2: Convert to fraction form
    28,712.48/43,060.40 = 11,178.40/x
  3. Step 3: Cross multiply
    28,712.48x = 43,060.40 × 11,178.40
  4. Step 4: Simplify right side
    28,712.48x = 481,346,375.36
  5. Step 5: Solve for x
    x = 481,346,375.36/28,712.48
  6. Step 6: Final answer
    x = 16,764.36

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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.