Home / 11,490.98-15,857.61-6,455.42

Finding the Fourth Proportional to 11,490.98, 15,857.61 and 6,455.42

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Solution

The fourth proportional to 11,490.98, 15,857.61 and 6,455.42 is: 8,908.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.98 : 15,857.61 = 6,455.42 : x
  2. Step 2: Convert to fraction form
    11,490.98/15,857.61 = 6,455.42/x
  3. Step 3: Cross multiply
    11,490.98x = 15,857.61 × 6,455.42
  4. Step 4: Simplify right side
    11,490.98x = 102,367,453.46
  5. Step 5: Solve for x
    x = 102,367,453.46/11,490.98
  6. Step 6: Final answer
    x = 8,908.51

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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.