Home / 12,789.48-19,186.65-4,471.86

Finding the Fourth Proportional to 12,789.48, 19,186.65 and 4,471.86

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Solution

The fourth proportional to 12,789.48, 19,186.65 and 4,471.86 is: 6,708.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.48 : 19,186.65 = 4,471.86 : x
  2. Step 2: Convert to fraction form
    12,789.48/19,186.65 = 4,471.86/x
  3. Step 3: Cross multiply
    12,789.48x = 19,186.65 × 4,471.86
  4. Step 4: Simplify right side
    12,789.48x = 85,800,012.67
  5. Step 5: Solve for x
    x = 85,800,012.67/12,789.48
  6. Step 6: Final answer
    x = 6,708.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.