Home / 13,929.45-19,222.94-7,641.82

Finding the Fourth Proportional to 13,929.45, 19,222.94 and 7,641.82

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Solution

The fourth proportional to 13,929.45, 19,222.94 and 7,641.82 is: 10,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.45 : 19,222.94 = 7,641.82 : x
  2. Step 2: Convert to fraction form
    13,929.45/19,222.94 = 7,641.82/x
  3. Step 3: Cross multiply
    13,929.45x = 19,222.94 × 7,641.82
  4. Step 4: Simplify right side
    13,929.45x = 146,898,247.35
  5. Step 5: Solve for x
    x = 146,898,247.35/13,929.45
  6. Step 6: Final answer
    x = 10,545.88

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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.