Home / 21,037.65-31,556.75-6,997.68

Finding the Fourth Proportional to 21,037.65, 31,556.75 and 6,997.68

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Solution

The fourth proportional to 21,037.65, 31,556.75 and 6,997.68 is: 10,496.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.65 : 31,556.75 = 6,997.68 : x
  2. Step 2: Convert to fraction form
    21,037.65/31,556.75 = 6,997.68/x
  3. Step 3: Cross multiply
    21,037.65x = 31,556.75 × 6,997.68
  4. Step 4: Simplify right side
    21,037.65x = 220,823,845.57
  5. Step 5: Solve for x
    x = 220,823,845.57/21,037.65
  6. Step 6: Final answer
    x = 10,496.60

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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.