Home / 21,742.76-32,564.63-12,959.53

Finding the Fourth Proportional to 21,742.76, 32,564.63 and 12,959.53

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Solution

The fourth proportional to 21,742.76, 32,564.63 and 12,959.53 is: 19,409.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,742.76 : 32,564.63 = 12,959.53 : x
  2. Step 2: Convert to fraction form
    21,742.76/32,564.63 = 12,959.53/x
  3. Step 3: Cross multiply
    21,742.76x = 32,564.63 × 12,959.53
  4. Step 4: Simplify right side
    21,742.76x = 422,022,250.41
  5. Step 5: Solve for x
    x = 422,022,250.41/21,742.76
  6. Step 6: Final answer
    x = 19,409.78

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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.