Home / 15,857.67-21,883.61-8,783.94

Finding the Fourth Proportional to 15,857.67, 21,883.61 and 8,783.94

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Solution

The fourth proportional to 15,857.67, 21,883.61 and 8,783.94 is: 12,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,857.67 : 21,883.61 = 8,783.94 : x
  2. Step 2: Convert to fraction form
    15,857.67/21,883.61 = 8,783.94/x
  3. Step 3: Cross multiply
    15,857.67x = 21,883.61 × 8,783.94
  4. Step 4: Simplify right side
    15,857.67x = 192,224,339.18
  5. Step 5: Solve for x
    x = 192,224,339.18/15,857.67
  6. Step 6: Final answer
    x = 12,121.85

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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.