Home / 28,157.22-42,193.31-18,764.06

Finding the Fourth Proportional to 28,157.22, 42,193.31 and 18,764.06

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Solution

The fourth proportional to 28,157.22, 42,193.31 and 18,764.06 is: 28,117.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.22 : 42,193.31 = 18,764.06 : x
  2. Step 2: Convert to fraction form
    28,157.22/42,193.31 = 18,764.06/x
  3. Step 3: Cross multiply
    28,157.22x = 42,193.31 × 18,764.06
  4. Step 4: Simplify right side
    28,157.22x = 791,717,495.65
  5. Step 5: Solve for x
    x = 791,717,495.65/28,157.22
  6. Step 6: Final answer
    x = 28,117.74

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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.