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Finding the Fourth Proportional to 16,742.70, 25,114.05 and 12,806.10

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Solution

The fourth proportional to 16,742.70, 25,114.05 and 12,806.10 is: 19,209.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,742.70 : 25,114.05 = 12,806.10 : x
  2. Step 2: Convert to fraction form
    16,742.70/25,114.05 = 12,806.10/x
  3. Step 3: Cross multiply
    16,742.70x = 25,114.05 × 12,806.10
  4. Step 4: Simplify right side
    16,742.70x = 321,613,035.71
  5. Step 5: Solve for x
    x = 321,613,035.71/16,742.70
  6. Step 6: Final answer
    x = 19,209.15

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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.