Home / 21,957.86-32,936.79-5,317.89

Finding the Fourth Proportional to 21,957.86, 32,936.79 and 5,317.89

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Solution

The fourth proportional to 21,957.86, 32,936.79 and 5,317.89 is: 7,976.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.86 : 32,936.79 = 5,317.89 : x
  2. Step 2: Convert to fraction form
    21,957.86/32,936.79 = 5,317.89/x
  3. Step 3: Cross multiply
    21,957.86x = 32,936.79 × 5,317.89
  4. Step 4: Simplify right side
    21,957.86x = 175,154,226.17
  5. Step 5: Solve for x
    x = 175,154,226.17/21,957.86
  6. Step 6: Final answer
    x = 7,976.84

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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.