Home / 21,931.95-32,902.37-7,136.90

Finding the Fourth Proportional to 21,931.95, 32,902.37 and 7,136.90

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Solution

The fourth proportional to 21,931.95, 32,902.37 and 7,136.90 is: 10,706.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.95 : 32,902.37 = 7,136.90 : x
  2. Step 2: Convert to fraction form
    21,931.95/32,902.37 = 7,136.90/x
  3. Step 3: Cross multiply
    21,931.95x = 32,902.37 × 7,136.90
  4. Step 4: Simplify right side
    21,931.95x = 234,820,874.40
  5. Step 5: Solve for x
    x = 234,820,874.40/21,931.95
  6. Step 6: Final answer
    x = 10,706.79

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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.