Home / 21,037.36-31,555.89-6,998.44

Finding the Fourth Proportional to 21,037.36, 31,555.89 and 6,998.44

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Solution

The fourth proportional to 21,037.36, 31,555.89 and 6,998.44 is: 10,497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.36 : 31,555.89 = 6,998.44 : x
  2. Step 2: Convert to fraction form
    21,037.36/31,555.89 = 6,998.44/x
  3. Step 3: Cross multiply
    21,037.36x = 31,555.89 × 6,998.44
  4. Step 4: Simplify right side
    21,037.36x = 220,842,002.81
  5. Step 5: Solve for x
    x = 220,842,002.81/21,037.36
  6. Step 6: Final answer
    x = 10,497.61

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Double scale
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Similar ratio
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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.