Home / 21,815.02-32,724.65-8,664.45

Finding the Fourth Proportional to 21,815.02, 32,724.65 and 8,664.45

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Solution

The fourth proportional to 21,815.02, 32,724.65 and 8,664.45 is: 12,997.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815.02 : 32,724.65 = 8,664.45 : x
  2. Step 2: Convert to fraction form
    21,815.02/32,724.65 = 8,664.45/x
  3. Step 3: Cross multiply
    21,815.02x = 32,724.65 × 8,664.45
  4. Step 4: Simplify right side
    21,815.02x = 283,541,093.69
  5. Step 5: Solve for x
    x = 283,541,093.69/21,815.02
  6. Step 6: Final answer
    x = 12,997.52

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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.