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Finding the Fourth Proportional to 20,162.90, 30,211.95 and 14,914.10

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Solution

The fourth proportional to 20,162.90, 30,211.95 and 14,914.10 is: 22,347.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.90 : 30,211.95 = 14,914.10 : x
  2. Step 2: Convert to fraction form
    20,162.90/30,211.95 = 14,914.10/x
  3. Step 3: Cross multiply
    20,162.90x = 30,211.95 × 14,914.10
  4. Step 4: Simplify right side
    20,162.90x = 450,584,043.50
  5. Step 5: Solve for x
    x = 450,584,043.50/20,162.90
  6. Step 6: Final answer
    x = 22,347.18

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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.