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Finding the Fourth Proportional to 10,900.64, 16,350.96 and 7,620.08

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Solution

The fourth proportional to 10,900.64, 16,350.96 and 7,620.08 is: 11,430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.64 : 16,350.96 = 7,620.08 : x
  2. Step 2: Convert to fraction form
    10,900.64/16,350.96 = 7,620.08/x
  3. Step 3: Cross multiply
    10,900.64x = 16,350.96 × 7,620.08
  4. Step 4: Simplify right side
    10,900.64x = 124,595,623.28
  5. Step 5: Solve for x
    x = 124,595,623.28/10,900.64
  6. Step 6: Final answer
    x = 11,430.12

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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.