Home / 15,873.12-21,905.64-8,799.48

Finding the Fourth Proportional to 15,873.12, 21,905.64 and 8,799.48

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Solution

The fourth proportional to 15,873.12, 21,905.64 and 8,799.48 is: 12,143.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.12 : 21,905.64 = 8,799.48 : x
  2. Step 2: Convert to fraction form
    15,873.12/21,905.64 = 8,799.48/x
  3. Step 3: Cross multiply
    15,873.12x = 21,905.64 × 8,799.48
  4. Step 4: Simplify right side
    15,873.12x = 192,758,241.07
  5. Step 5: Solve for x
    x = 192,758,241.07/15,873.12
  6. Step 6: Final answer
    x = 12,143.69

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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.