Home / 12,729.60-19,101.36-4,938.72

Finding the Fourth Proportional to 12,729.60, 19,101.36 and 4,938.72

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Solution

The fourth proportional to 12,729.60, 19,101.36 and 4,938.72 is: 7,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.60 : 19,101.36 = 4,938.72 : x
  2. Step 2: Convert to fraction form
    12,729.60/19,101.36 = 4,938.72/x
  3. Step 3: Cross multiply
    12,729.60x = 19,101.36 × 4,938.72
  4. Step 4: Simplify right side
    12,729.60x = 94,336,268.66
  5. Step 5: Solve for x
    x = 94,336,268.66/12,729.60
  6. Step 6: Final answer
    x = 7,410.78

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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.