Home / 21,719.80-32,580.31-7,677.84

Finding the Fourth Proportional to 21,719.80, 32,580.31 and 7,677.84

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Solution

The fourth proportional to 21,719.80, 32,580.31 and 7,677.84 is: 11,516.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.80 : 32,580.31 = 7,677.84 : x
  2. Step 2: Convert to fraction form
    21,719.80/32,580.31 = 7,677.84/x
  3. Step 3: Cross multiply
    21,719.80x = 32,580.31 × 7,677.84
  4. Step 4: Simplify right side
    21,719.80x = 250,146,407.33
  5. Step 5: Solve for x
    x = 250,146,407.33/21,719.80
  6. Step 6: Final answer
    x = 11,516.98

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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.