Home / 15,780.72-21,771.27-9,063.90

Finding the Fourth Proportional to 15,780.72, 21,771.27 and 9,063.90

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Solution

The fourth proportional to 15,780.72, 21,771.27 and 9,063.90 is: 12,504.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780.72 : 21,771.27 = 9,063.90 : x
  2. Step 2: Convert to fraction form
    15,780.72/21,771.27 = 9,063.90/x
  3. Step 3: Cross multiply
    15,780.72x = 21,771.27 × 9,063.90
  4. Step 4: Simplify right side
    15,780.72x = 197,332,614.15
  5. Step 5: Solve for x
    x = 197,332,614.15/15,780.72
  6. Step 6: Final answer
    x = 12,504.66

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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.