Home / 18,742.22-28,122.44-8,869.74

Finding the Fourth Proportional to 18,742.22, 28,122.44 and 8,869.74

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Solution

The fourth proportional to 18,742.22, 28,122.44 and 8,869.74 is: 13,308.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.22 : 28,122.44 = 8,869.74 : x
  2. Step 2: Convert to fraction form
    18,742.22/28,122.44 = 8,869.74/x
  3. Step 3: Cross multiply
    18,742.22x = 28,122.44 × 8,869.74
  4. Step 4: Simplify right side
    18,742.22x = 249,438,686.62
  5. Step 5: Solve for x
    x = 249,438,686.62/18,742.22
  6. Step 6: Final answer
    x = 13,308.92

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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.