Home / 12,859.92-19,307.70-8,505.36

Finding the Fourth Proportional to 12,859.92, 19,307.70 and 8,505.36

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Solution

The fourth proportional to 12,859.92, 19,307.70 and 8,505.36 is: 12,769.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.92 : 19,307.70 = 8,505.36 : x
  2. Step 2: Convert to fraction form
    12,859.92/19,307.70 = 8,505.36/x
  3. Step 3: Cross multiply
    12,859.92x = 19,307.70 × 8,505.36
  4. Step 4: Simplify right side
    12,859.92x = 164,218,939.27
  5. Step 5: Solve for x
    x = 164,218,939.27/12,859.92
  6. Step 6: Final answer
    x = 12,769.83

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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.