Home / 18,877.66-28,298.80-6,388.94

Finding the Fourth Proportional to 18,877.66, 28,298.80 and 6,388.94

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Solution

The fourth proportional to 18,877.66, 28,298.80 and 6,388.94 is: 9,577.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.66 : 28,298.80 = 6,388.94 : x
  2. Step 2: Convert to fraction form
    18,877.66/28,298.80 = 6,388.94/x
  3. Step 3: Cross multiply
    18,877.66x = 28,298.80 × 6,388.94
  4. Step 4: Simplify right side
    18,877.66x = 180,799,414.01
  5. Step 5: Solve for x
    x = 180,799,414.01/18,877.66
  6. Step 6: Final answer
    x = 9,577.43

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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.