Home / 12,239.64-18,366.56-5,219.28

Finding the Fourth Proportional to 12,239.64, 18,366.56 and 5,219.28

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Solution

The fourth proportional to 12,239.64, 18,366.56 and 5,219.28 is: 7,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.64 : 18,366.56 = 5,219.28 : x
  2. Step 2: Convert to fraction form
    12,239.64/18,366.56 = 5,219.28/x
  3. Step 3: Cross multiply
    12,239.64x = 18,366.56 × 5,219.28
  4. Step 4: Simplify right side
    12,239.64x = 95,860,219.28
  5. Step 5: Solve for x
    x = 95,860,219.28/12,239.64
  6. Step 6: Final answer
    x = 7,831.95

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1.5x scale

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.