Home / 15,785.24-21,783.52-8,711.66

Finding the Fourth Proportional to 15,785.24, 21,783.52 and 8,711.66

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Solution

The fourth proportional to 15,785.24, 21,783.52 and 8,711.66 is: 12,022.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,785.24 : 21,783.52 = 8,711.66 : x
  2. Step 2: Convert to fraction form
    15,785.24/21,783.52 = 8,711.66/x
  3. Step 3: Cross multiply
    15,785.24x = 21,783.52 × 8,711.66
  4. Step 4: Simplify right side
    15,785.24x = 189,770,562.66
  5. Step 5: Solve for x
    x = 189,770,562.66/15,785.24
  6. Step 6: Final answer
    x = 12,022.03

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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.