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Finding the Fourth Proportional to 10,941.80, 16,412.70 and 10,212.80

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Solution

The fourth proportional to 10,941.80, 16,412.70 and 10,212.80 is: 15,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,941.80 : 16,412.70 = 10,212.80 : x
  2. Step 2: Convert to fraction form
    10,941.80/16,412.70 = 10,212.80/x
  3. Step 3: Cross multiply
    10,941.80x = 16,412.70 × 10,212.80
  4. Step 4: Simplify right side
    10,941.80x = 167,619,622.56
  5. Step 5: Solve for x
    x = 167,619,622.56/10,941.80
  6. Step 6: Final answer
    x = 15,319.20

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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.