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Finding the Fourth Proportional to 21,941.08, 32,915.03 and 7,146.55

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Solution

The fourth proportional to 21,941.08, 32,915.03 and 7,146.55 is: 10,720.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.08 : 32,915.03 = 7,146.55 : x
  2. Step 2: Convert to fraction form
    21,941.08/32,915.03 = 7,146.55/x
  3. Step 3: Cross multiply
    21,941.08x = 32,915.03 × 7,146.55
  4. Step 4: Simplify right side
    21,941.08x = 235,228,871.91
  5. Step 5: Solve for x
    x = 235,228,871.91/21,941.08
  6. Step 6: Final answer
    x = 10,720.94

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1.5x scale

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.