Home / 13,288.80-19,929.60-6,718.80

Finding the Fourth Proportional to 13,288.80, 19,929.60 and 6,718.80

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Solution

The fourth proportional to 13,288.80, 19,929.60 and 6,718.80 is: 10,076.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.80 : 19,929.60 = 6,718.80 : x
  2. Step 2: Convert to fraction form
    13,288.80/19,929.60 = 6,718.80/x
  3. Step 3: Cross multiply
    13,288.80x = 19,929.60 × 6,718.80
  4. Step 4: Simplify right side
    13,288.80x = 133,902,996.48
  5. Step 5: Solve for x
    x = 133,902,996.48/13,288.80
  6. Step 6: Final answer
    x = 10,076.38

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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.