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Finding the Fourth Proportional to 12,808.84, 17,690.90 and 8,552.48

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Solution

The fourth proportional to 12,808.84, 17,690.90 and 8,552.48 is: 11,812.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.84 : 17,690.90 = 8,552.48 : x
  2. Step 2: Convert to fraction form
    12,808.84/17,690.90 = 8,552.48/x
  3. Step 3: Cross multiply
    12,808.84x = 17,690.90 × 8,552.48
  4. Step 4: Simplify right side
    12,808.84x = 151,301,068.43
  5. Step 5: Solve for x
    x = 151,301,068.43/12,808.84
  6. Step 6: Final answer
    x = 11,812.24

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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.