Home / 15,849.09-21,871.91-8,775.68

Finding the Fourth Proportional to 15,849.09, 21,871.91 and 8,775.68

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Solution

The fourth proportional to 15,849.09, 21,871.91 and 8,775.68 is: 12,110.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,849.09 : 21,871.91 = 8,775.68 : x
  2. Step 2: Convert to fraction form
    15,849.09/21,871.91 = 8,775.68/x
  3. Step 3: Cross multiply
    15,849.09x = 21,871.91 × 8,775.68
  4. Step 4: Simplify right side
    15,849.09x = 191,940,729.91
  5. Step 5: Solve for x
    x = 191,940,729.91/15,849.09
  6. Step 6: Final answer
    x = 12,110.52

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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.