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Finding the Fourth Proportional to 10,007.68, 13,808.46 and 5,813.68

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Solution

The fourth proportional to 10,007.68, 13,808.46 and 5,813.68 is: 8,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,007.68 : 13,808.46 = 5,813.68 : x
  2. Step 2: Convert to fraction form
    10,007.68/13,808.46 = 5,813.68/x
  3. Step 3: Cross multiply
    10,007.68x = 13,808.46 × 5,813.68
  4. Step 4: Simplify right side
    10,007.68x = 80,277,967.73
  5. Step 5: Solve for x
    x = 80,277,967.73/10,007.68
  6. Step 6: Final answer
    x = 8,021.64

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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.