Home / 12,278.07-18,422.60-6,433.34

Finding the Fourth Proportional to 12,278.07, 18,422.60 and 6,433.34

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Solution

The fourth proportional to 12,278.07, 18,422.60 and 6,433.34 is: 9,652.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.07 : 18,422.60 = 6,433.34 : x
  2. Step 2: Convert to fraction form
    12,278.07/18,422.60 = 6,433.34/x
  3. Step 3: Cross multiply
    12,278.07x = 18,422.60 × 6,433.34
  4. Step 4: Simplify right side
    12,278.07x = 118,518,725.20
  5. Step 5: Solve for x
    x = 118,518,725.20/12,278.07
  6. Step 6: Final answer
    x = 9,652.88

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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.