Home / 21,717.17-32,580.54-12,361.60

Finding the Fourth Proportional to 21,717.17, 32,580.54 and 12,361.60

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Solution

The fourth proportional to 21,717.17, 32,580.54 and 12,361.60 is: 18,545.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.17 : 32,580.54 = 12,361.60 : x
  2. Step 2: Convert to fraction form
    21,717.17/32,580.54 = 12,361.60/x
  3. Step 3: Cross multiply
    21,717.17x = 32,580.54 × 12,361.60
  4. Step 4: Simplify right side
    21,717.17x = 402,747,603.26
  5. Step 5: Solve for x
    x = 402,747,603.26/21,717.17
  6. Step 6: Final answer
    x = 18,545.12

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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.