Home / 20,348.10-30,522.15-19,116.90

Finding the Fourth Proportional to 20,348.10, 30,522.15 and 19,116.90

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Solution

The fourth proportional to 20,348.10, 30,522.15 and 19,116.90 is: 28,675.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.10 : 30,522.15 = 19,116.90 : x
  2. Step 2: Convert to fraction form
    20,348.10/30,522.15 = 19,116.90/x
  3. Step 3: Cross multiply
    20,348.10x = 30,522.15 × 19,116.90
  4. Step 4: Simplify right side
    20,348.10x = 583,488,889.34
  5. Step 5: Solve for x
    x = 583,488,889.34/20,348.10
  6. Step 6: Final answer
    x = 28,675.35

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Double scale
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Similar ratio
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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.