Home / 13,558.76-18,711.17-7,896.80

Finding the Fourth Proportional to 13,558.76, 18,711.17 and 7,896.80

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Solution

The fourth proportional to 13,558.76, 18,711.17 and 7,896.80 is: 10,897.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.76 : 18,711.17 = 7,896.80 : x
  2. Step 2: Convert to fraction form
    13,558.76/18,711.17 = 7,896.80/x
  3. Step 3: Cross multiply
    13,558.76x = 18,711.17 × 7,896.80
  4. Step 4: Simplify right side
    13,558.76x = 147,758,234.22
  5. Step 5: Solve for x
    x = 147,758,234.22/13,558.76
  6. Step 6: Final answer
    x = 10,897.63

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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.