Home / 15,340.88-21,171.17-8,628.62

Finding the Fourth Proportional to 15,340.88, 21,171.17 and 8,628.62

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Solution

The fourth proportional to 15,340.88, 21,171.17 and 8,628.62 is: 11,907.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,340.88 : 21,171.17 = 8,628.62 : x
  2. Step 2: Convert to fraction form
    15,340.88/21,171.17 = 8,628.62/x
  3. Step 3: Cross multiply
    15,340.88x = 21,171.17 × 8,628.62
  4. Step 4: Simplify right side
    15,340.88x = 182,677,980.89
  5. Step 5: Solve for x
    x = 182,677,980.89/15,340.88
  6. Step 6: Final answer
    x = 11,907.92

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1.5x scale

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.