Home / 15,845.20-21,865.38-9,298.60

Finding the Fourth Proportional to 15,845.20, 21,865.38 and 9,298.60

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Solution

The fourth proportional to 15,845.20, 21,865.38 and 9,298.60 is: 12,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.20 : 21,865.38 = 9,298.60 : x
  2. Step 2: Convert to fraction form
    15,845.20/21,865.38 = 9,298.60/x
  3. Step 3: Cross multiply
    15,845.20x = 21,865.38 × 9,298.60
  4. Step 4: Simplify right side
    15,845.20x = 203,317,422.47
  5. Step 5: Solve for x
    x = 203,317,422.47/15,845.20
  6. Step 6: Final answer
    x = 12,831.48

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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.