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Finding the Fourth Proportional to 10,808.40, 16,226.40 and 8,345.04

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Solution

The fourth proportional to 10,808.40, 16,226.40 and 8,345.04 is: 12,528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.40 : 16,226.40 = 8,345.04 : x
  2. Step 2: Convert to fraction form
    10,808.40/16,226.40 = 8,345.04/x
  3. Step 3: Cross multiply
    10,808.40x = 16,226.40 × 8,345.04
  4. Step 4: Simplify right side
    10,808.40x = 135,409,957.06
  5. Step 5: Solve for x
    x = 135,409,957.06/10,808.40
  6. Step 6: Final answer
    x = 12,528.21

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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.