Home / 11,135.98-15,348.99-8,890.66

Finding the Fourth Proportional to 11,135.98, 15,348.99 and 8,890.66

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Solution

The fourth proportional to 11,135.98, 15,348.99 and 8,890.66 is: 12,254.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.98 : 15,348.99 = 8,890.66 : x
  2. Step 2: Convert to fraction form
    11,135.98/15,348.99 = 8,890.66/x
  3. Step 3: Cross multiply
    11,135.98x = 15,348.99 × 8,890.66
  4. Step 4: Simplify right side
    11,135.98x = 136,462,651.43
  5. Step 5: Solve for x
    x = 136,462,651.43/11,135.98
  6. Step 6: Final answer
    x = 12,254.21

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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.