Home / 15,900.06-21,941.30-8,729.80

Finding the Fourth Proportional to 15,900.06, 21,941.30 and 8,729.80

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Solution

The fourth proportional to 15,900.06, 21,941.30 and 8,729.80 is: 12,046.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.06 : 21,941.30 = 8,729.80 : x
  2. Step 2: Convert to fraction form
    15,900.06/21,941.30 = 8,729.80/x
  3. Step 3: Cross multiply
    15,900.06x = 21,941.30 × 8,729.80
  4. Step 4: Simplify right side
    15,900.06x = 191,543,160.74
  5. Step 5: Solve for x
    x = 191,543,160.74/15,900.06
  6. Step 6: Final answer
    x = 12,046.69

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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.