Home / 13,789.32-19,030.22-7,821.38

Finding the Fourth Proportional to 13,789.32, 19,030.22 and 7,821.38

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Solution

The fourth proportional to 13,789.32, 19,030.22 and 7,821.38 is: 10,794.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.32 : 19,030.22 = 7,821.38 : x
  2. Step 2: Convert to fraction form
    13,789.32/19,030.22 = 7,821.38/x
  3. Step 3: Cross multiply
    13,789.32x = 19,030.22 × 7,821.38
  4. Step 4: Simplify right side
    13,789.32x = 148,842,447.85
  5. Step 5: Solve for x
    x = 148,842,447.85/13,789.32
  6. Step 6: Final answer
    x = 10,794.04

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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.