Home / 28,355.06-42,539.63-11,719.89

Finding the Fourth Proportional to 28,355.06, 42,539.63 and 11,719.89

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Solution

The fourth proportional to 28,355.06, 42,539.63 and 11,719.89 is: 17,582.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.06 : 42,539.63 = 11,719.89 : x
  2. Step 2: Convert to fraction form
    28,355.06/42,539.63 = 11,719.89/x
  3. Step 3: Cross multiply
    28,355.06x = 42,539.63 × 11,719.89
  4. Step 4: Simplify right side
    28,355.06x = 498,559,791.57
  5. Step 5: Solve for x
    x = 498,559,791.57/28,355.06
  6. Step 6: Final answer
    x = 17,582.74

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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.