Home / 15,978.35-22,049.81-9,264.60

Finding the Fourth Proportional to 15,978.35, 22,049.81 and 9,264.60

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Solution

The fourth proportional to 15,978.35, 22,049.81 and 9,264.60 is: 12,784.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.35 : 22,049.81 = 9,264.60 : x
  2. Step 2: Convert to fraction form
    15,978.35/22,049.81 = 9,264.60/x
  3. Step 3: Cross multiply
    15,978.35x = 22,049.81 × 9,264.60
  4. Step 4: Simplify right side
    15,978.35x = 204,282,582.64
  5. Step 5: Solve for x
    x = 204,282,582.64/15,978.35
  6. Step 6: Final answer
    x = 12,784.96

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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.