Home / 27,640.62-38,144.07-15,703.98

Finding the Fourth Proportional to 27,640.62, 38,144.07 and 15,703.98

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Solution

The fourth proportional to 27,640.62, 38,144.07 and 15,703.98 is: 21,671.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.62 : 38,144.07 = 15,703.98 : x
  2. Step 2: Convert to fraction form
    27,640.62/38,144.07 = 15,703.98/x
  3. Step 3: Cross multiply
    27,640.62x = 38,144.07 × 15,703.98
  4. Step 4: Simplify right side
    27,640.62x = 599,013,712.40
  5. Step 5: Solve for x
    x = 599,013,712.40/27,640.62
  6. Step 6: Final answer
    x = 21,671.50

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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.