Home / 11,990.26-17,985.93-8,687.62

Finding the Fourth Proportional to 11,990.26, 17,985.93 and 8,687.62

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Solution

The fourth proportional to 11,990.26, 17,985.93 and 8,687.62 is: 13,031.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.26 : 17,985.93 = 8,687.62 : x
  2. Step 2: Convert to fraction form
    11,990.26/17,985.93 = 8,687.62/x
  3. Step 3: Cross multiply
    11,990.26x = 17,985.93 × 8,687.62
  4. Step 4: Simplify right side
    11,990.26x = 156,254,925.19
  5. Step 5: Solve for x
    x = 156,254,925.19/11,990.26
  6. Step 6: Final answer
    x = 13,031.82

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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.