Home / 19,953.30-29,915.55-11,190.90

Finding the Fourth Proportional to 19,953.30, 29,915.55 and 11,190.90

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Solution

The fourth proportional to 19,953.30, 29,915.55 and 11,190.90 is: 16,778.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,953.30 : 29,915.55 = 11,190.90 : x
  2. Step 2: Convert to fraction form
    19,953.30/29,915.55 = 11,190.90/x
  3. Step 3: Cross multiply
    19,953.30x = 29,915.55 × 11,190.90
  4. Step 4: Simplify right side
    19,953.30x = 334,781,928.50
  5. Step 5: Solve for x
    x = 334,781,928.50/19,953.30
  6. Step 6: Final answer
    x = 16,778.27

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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.