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Finding the Fourth Proportional to 10,900.20, 15,043.68 and 7,363.20

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Solution

The fourth proportional to 10,900.20, 15,043.68 and 7,363.20 is: 10,162.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.20 : 15,043.68 = 7,363.20 : x
  2. Step 2: Convert to fraction form
    10,900.20/15,043.68 = 7,363.20/x
  3. Step 3: Cross multiply
    10,900.20x = 15,043.68 × 7,363.20
  4. Step 4: Simplify right side
    10,900.20x = 110,769,624.58
  5. Step 5: Solve for x
    x = 110,769,624.58/10,900.20
  6. Step 6: Final answer
    x = 10,162.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.