Home / 21,580.81-32,360.38-12,577.83

Finding the Fourth Proportional to 21,580.81, 32,360.38 and 12,577.83

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Solution

The fourth proportional to 21,580.81, 32,360.38 and 12,577.83 is: 18,860.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580.81 : 32,360.38 = 12,577.83 : x
  2. Step 2: Convert to fraction form
    21,580.81/32,360.38 = 12,577.83/x
  3. Step 3: Cross multiply
    21,580.81x = 32,360.38 × 12,577.83
  4. Step 4: Simplify right side
    21,580.81x = 407,023,205.58
  5. Step 5: Solve for x
    x = 407,023,205.58/21,580.81
  6. Step 6: Final answer
    x = 18,860.42

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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.