Home / 15,858.46-21,884.52-8,688.43

Finding the Fourth Proportional to 15,858.46, 21,884.52 and 8,688.43

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Solution

The fourth proportional to 15,858.46, 21,884.52 and 8,688.43 is: 11,989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.46 : 21,884.52 = 8,688.43 : x
  2. Step 2: Convert to fraction form
    15,858.46/21,884.52 = 8,688.43/x
  3. Step 3: Cross multiply
    15,858.46x = 21,884.52 × 8,688.43
  4. Step 4: Simplify right side
    15,858.46x = 190,142,120.10
  5. Step 5: Solve for x
    x = 190,142,120.10/15,858.46
  6. Step 6: Final answer
    x = 11,989.95

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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.