Home / 12,780.27-19,170.63-4,882.86

Finding the Fourth Proportional to 12,780.27, 19,170.63 and 4,882.86

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Solution

The fourth proportional to 12,780.27, 19,170.63 and 4,882.86 is: 7,324.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.27 : 19,170.63 = 4,882.86 : x
  2. Step 2: Convert to fraction form
    12,780.27/19,170.63 = 4,882.86/x
  3. Step 3: Cross multiply
    12,780.27x = 19,170.63 × 4,882.86
  4. Step 4: Simplify right side
    12,780.27x = 93,607,502.40
  5. Step 5: Solve for x
    x = 93,607,502.40/12,780.27
  6. Step 6: Final answer
    x = 7,324.38

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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.