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Finding the Fourth Proportional to 11,429.68, 17,130.84 and 5,885.68

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Solution

The fourth proportional to 11,429.68, 17,130.84 and 5,885.68 is: 8,821.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.68 : 17,130.84 = 5,885.68 : x
  2. Step 2: Convert to fraction form
    11,429.68/17,130.84 = 5,885.68/x
  3. Step 3: Cross multiply
    11,429.68x = 17,130.84 × 5,885.68
  4. Step 4: Simplify right side
    11,429.68x = 100,826,642.37
  5. Step 5: Solve for x
    x = 100,826,642.37/11,429.68
  6. Step 6: Final answer
    x = 8,821.48

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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.