Home / 21,735.18-32,580.71-12,355.81

Finding the Fourth Proportional to 21,735.18, 32,580.71 and 12,355.81

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Solution

The fourth proportional to 21,735.18, 32,580.71 and 12,355.81 is: 18,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,735.18 : 32,580.71 = 12,355.81 : x
  2. Step 2: Convert to fraction form
    21,735.18/32,580.71 = 12,355.81/x
  3. Step 3: Cross multiply
    21,735.18x = 32,580.71 × 12,355.81
  4. Step 4: Simplify right side
    21,735.18x = 402,561,163.02
  5. Step 5: Solve for x
    x = 402,561,163.02/21,735.18
  6. Step 6: Final answer
    x = 18,521.18

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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.