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Finding the Fourth Proportional to 10,635.60, 16,033.08 and 9,921.99

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Solution

The fourth proportional to 10,635.60, 16,033.08 and 9,921.99 is: 14,957.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,635.60 : 16,033.08 = 9,921.99 : x
  2. Step 2: Convert to fraction form
    10,635.60/16,033.08 = 9,921.99/x
  3. Step 3: Cross multiply
    10,635.60x = 16,033.08 × 9,921.99
  4. Step 4: Simplify right side
    10,635.60x = 159,080,059.43
  5. Step 5: Solve for x
    x = 159,080,059.43/10,635.60
  6. Step 6: Final answer
    x = 14,957.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.