Home / 10,721.15-16,092.12-5,178.39

Finding the Fourth Proportional to 10,721.15, 16,092.12 and 5,178.39

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Solution

The fourth proportional to 10,721.15, 16,092.12 and 5,178.39 is: 7,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.15 : 16,092.12 = 5,178.39 : x
  2. Step 2: Convert to fraction form
    10,721.15/16,092.12 = 5,178.39/x
  3. Step 3: Cross multiply
    10,721.15x = 16,092.12 × 5,178.39
  4. Step 4: Simplify right side
    10,721.15x = 83,331,232.36
  5. Step 5: Solve for x
    x = 83,331,232.36/10,721.15
  6. Step 6: Final answer
    x = 7,772.60

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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.