Home / 20,374.02-28,115.91-11,421.51

Finding the Fourth Proportional to 20,374.02, 28,115.91 and 11,421.51

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Solution

The fourth proportional to 20,374.02, 28,115.91 and 11,421.51 is: 15,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.02 : 28,115.91 = 11,421.51 : x
  2. Step 2: Convert to fraction form
    20,374.02/28,115.91 = 11,421.51/x
  3. Step 3: Cross multiply
    20,374.02x = 28,115.91 × 11,421.51
  4. Step 4: Simplify right side
    20,374.02x = 321,126,147.22
  5. Step 5: Solve for x
    x = 321,126,147.22/20,374.02
  6. Step 6: Final answer
    x = 15,761.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.