Home / 12,621.79-18,939.52-4,729.68

Finding the Fourth Proportional to 12,621.79, 18,939.52 and 4,729.68

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Solution

The fourth proportional to 12,621.79, 18,939.52 and 4,729.68 is: 7,097.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.79 : 18,939.52 = 4,729.68 : x
  2. Step 2: Convert to fraction form
    12,621.79/18,939.52 = 4,729.68/x
  3. Step 3: Cross multiply
    12,621.79x = 18,939.52 × 4,729.68
  4. Step 4: Simplify right side
    12,621.79x = 89,577,868.95
  5. Step 5: Solve for x
    x = 89,577,868.95/12,621.79
  6. Step 6: Final answer
    x = 7,097.08

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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.