Home / 15,768.54-21,737.97-12,405.52

Finding the Fourth Proportional to 15,768.54, 21,737.97 and 12,405.52

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Solution

The fourth proportional to 15,768.54, 21,737.97 and 12,405.52 is: 17,101.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.54 : 21,737.97 = 12,405.52 : x
  2. Step 2: Convert to fraction form
    15,768.54/21,737.97 = 12,405.52/x
  3. Step 3: Cross multiply
    15,768.54x = 21,737.97 × 12,405.52
  4. Step 4: Simplify right side
    15,768.54x = 269,670,813.77
  5. Step 5: Solve for x
    x = 269,670,813.77/15,768.54
  6. Step 6: Final answer
    x = 17,101.83

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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.