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Finding the Fourth Proportional to 10,274.80, 15,412.20 and 6,994.30

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Solution

The fourth proportional to 10,274.80, 15,412.20 and 6,994.30 is: 10,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,274.80 : 15,412.20 = 6,994.30 : x
  2. Step 2: Convert to fraction form
    10,274.80/15,412.20 = 6,994.30/x
  3. Step 3: Cross multiply
    10,274.80x = 15,412.20 × 6,994.30
  4. Step 4: Simplify right side
    10,274.80x = 107,797,550.46
  5. Step 5: Solve for x
    x = 107,797,550.46/10,274.80
  6. Step 6: Final answer
    x = 10,491.45

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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.