Home / 12,929.80-17,845.08-7,896.96

Finding the Fourth Proportional to 12,929.80, 17,845.08 and 7,896.96

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Solution

The fourth proportional to 12,929.80, 17,845.08 and 7,896.96 is: 10,899.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.80 : 17,845.08 = 7,896.96 : x
  2. Step 2: Convert to fraction form
    12,929.80/17,845.08 = 7,896.96/x
  3. Step 3: Cross multiply
    12,929.80x = 17,845.08 × 7,896.96
  4. Step 4: Simplify right side
    12,929.80x = 140,921,882.96
  5. Step 5: Solve for x
    x = 140,921,882.96/12,929.80
  6. Step 6: Final answer
    x = 10,899.00

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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.