Home / 20,915.96-28,862.23-11,962.02

Finding the Fourth Proportional to 20,915.96, 28,862.23 and 11,962.02

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Solution

The fourth proportional to 20,915.96, 28,862.23 and 11,962.02 is: 16,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.96 : 28,862.23 = 11,962.02 : x
  2. Step 2: Convert to fraction form
    20,915.96/28,862.23 = 11,962.02/x
  3. Step 3: Cross multiply
    20,915.96x = 28,862.23 × 11,962.02
  4. Step 4: Simplify right side
    20,915.96x = 345,250,572.50
  5. Step 5: Solve for x
    x = 345,250,572.50/20,915.96
  6. Step 6: Final answer
    x = 16,506.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.