Home / 18,858.60-28,287.90-4,818.66

Finding the Fourth Proportional to 18,858.60, 28,287.90 and 4,818.66

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Solution

The fourth proportional to 18,858.60, 28,287.90 and 4,818.66 is: 7,227.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.60 : 28,287.90 = 4,818.66 : x
  2. Step 2: Convert to fraction form
    18,858.60/28,287.90 = 4,818.66/x
  3. Step 3: Cross multiply
    18,858.60x = 28,287.90 × 4,818.66
  4. Step 4: Simplify right side
    18,858.60x = 136,309,772.21
  5. Step 5: Solve for x
    x = 136,309,772.21/18,858.60
  6. Step 6: Final answer
    x = 7,227.99

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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.