Home / 13,789.45-19,030.85-8,125.97

Finding the Fourth Proportional to 13,789.45, 19,030.85 and 8,125.97

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Solution

The fourth proportional to 13,789.45, 19,030.85 and 8,125.97 is: 11,214.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.45 : 19,030.85 = 8,125.97 : x
  2. Step 2: Convert to fraction form
    13,789.45/19,030.85 = 8,125.97/x
  3. Step 3: Cross multiply
    13,789.45x = 19,030.85 × 8,125.97
  4. Step 4: Simplify right side
    13,789.45x = 154,644,010.86
  5. Step 5: Solve for x
    x = 154,644,010.86/13,789.45
  6. Step 6: Final answer
    x = 11,214.66

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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.