Home / 21,310.32-31,965.58-6,519.18

Finding the Fourth Proportional to 21,310.32, 31,965.58 and 6,519.18

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Solution

The fourth proportional to 21,310.32, 31,965.58 and 6,519.18 is: 9,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.32 : 31,965.58 = 6,519.18 : x
  2. Step 2: Convert to fraction form
    21,310.32/31,965.58 = 6,519.18/x
  3. Step 3: Cross multiply
    21,310.32x = 31,965.58 × 6,519.18
  4. Step 4: Simplify right side
    21,310.32x = 208,389,369.82
  5. Step 5: Solve for x
    x = 208,389,369.82/21,310.32
  6. Step 6: Final answer
    x = 9,778.80

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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.