Home / 21,069.07-31,585.10-8,599.60

Finding the Fourth Proportional to 21,069.07, 31,585.10 and 8,599.60

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Solution

The fourth proportional to 21,069.07, 31,585.10 and 8,599.60 is: 12,891.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.07 : 31,585.10 = 8,599.60 : x
  2. Step 2: Convert to fraction form
    21,069.07/31,585.10 = 8,599.60/x
  3. Step 3: Cross multiply
    21,069.07x = 31,585.10 × 8,599.60
  4. Step 4: Simplify right side
    21,069.07x = 271,619,025.04
  5. Step 5: Solve for x
    x = 271,619,025.04/21,069.07
  6. Step 6: Final answer
    x = 12,891.84

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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.