Home / 21,787.95-32,678.00-5,777.60

Finding the Fourth Proportional to 21,787.95, 32,678.00 and 5,777.60

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Solution

The fourth proportional to 21,787.95, 32,678.00 and 5,777.60 is: 8,665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.95 : 32,678.00 = 5,777.60 : x
  2. Step 2: Convert to fraction form
    21,787.95/32,678.00 = 5,777.60/x
  3. Step 3: Cross multiply
    21,787.95x = 32,678.00 × 5,777.60
  4. Step 4: Simplify right side
    21,787.95x = 188,800,242.19
  5. Step 5: Solve for x
    x = 188,800,242.19/21,787.95
  6. Step 6: Final answer
    x = 8,665.35

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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.