Home / 18,818.55-28,227.15-7,722.36

Finding the Fourth Proportional to 18,818.55, 28,227.15 and 7,722.36

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Solution

The fourth proportional to 18,818.55, 28,227.15 and 7,722.36 is: 11,583.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.55 : 28,227.15 = 7,722.36 : x
  2. Step 2: Convert to fraction form
    18,818.55/28,227.15 = 7,722.36/x
  3. Step 3: Cross multiply
    18,818.55x = 28,227.15 × 7,722.36
  4. Step 4: Simplify right side
    18,818.55x = 217,980,214.07
  5. Step 5: Solve for x
    x = 217,980,214.07/18,818.55
  6. Step 6: Final answer
    x = 11,583.26

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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.