Home / 28,288.36-42,416.20-11,659.87

Finding the Fourth Proportional to 28,288.36, 42,416.20 and 11,659.87

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Solution

The fourth proportional to 28,288.36, 42,416.20 and 11,659.87 is: 17,483.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.36 : 42,416.20 = 11,659.87 : x
  2. Step 2: Convert to fraction form
    28,288.36/42,416.20 = 11,659.87/x
  3. Step 3: Cross multiply
    28,288.36x = 42,416.20 × 11,659.87
  4. Step 4: Simplify right side
    28,288.36x = 494,567,377.89
  5. Step 5: Solve for x
    x = 494,567,377.89/28,288.36
  6. Step 6: Final answer
    x = 17,483.07

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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.