Home / 18,979.01-28,449.45-6,490.49

Finding the Fourth Proportional to 18,979.01, 28,449.45 and 6,490.49

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Solution

The fourth proportional to 18,979.01, 28,449.45 and 6,490.49 is: 9,729.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.01 : 28,449.45 = 6,490.49 : x
  2. Step 2: Convert to fraction form
    18,979.01/28,449.45 = 6,490.49/x
  3. Step 3: Cross multiply
    18,979.01x = 28,449.45 × 6,490.49
  4. Step 4: Simplify right side
    18,979.01x = 184,650,870.73
  5. Step 5: Solve for x
    x = 184,650,870.73/18,979.01
  6. Step 6: Final answer
    x = 9,729.22

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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.