Home / 28,374.66-42,587.91-21,779.46

Finding the Fourth Proportional to 28,374.66, 42,587.91 and 21,779.46

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Solution

The fourth proportional to 28,374.66, 42,587.91 and 21,779.46 is: 32,689.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.66 : 42,587.91 = 21,779.46 : x
  2. Step 2: Convert to fraction form
    28,374.66/42,587.91 = 21,779.46/x
  3. Step 3: Cross multiply
    28,374.66x = 42,587.91 × 21,779.46
  4. Step 4: Simplify right side
    28,374.66x = 927,541,682.33
  5. Step 5: Solve for x
    x = 927,541,682.33/28,374.66
  6. Step 6: Final answer
    x = 32,689.09

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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.