Home / 13,354.74-20,025.82-7,809.78

Finding the Fourth Proportional to 13,354.74, 20,025.82 and 7,809.78

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Solution

The fourth proportional to 13,354.74, 20,025.82 and 7,809.78 is: 11,710.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.74 : 20,025.82 = 7,809.78 : x
  2. Step 2: Convert to fraction form
    13,354.74/20,025.82 = 7,809.78/x
  3. Step 3: Cross multiply
    13,354.74x = 20,025.82 × 7,809.78
  4. Step 4: Simplify right side
    13,354.74x = 156,397,248.52
  5. Step 5: Solve for x
    x = 156,397,248.52/13,354.74
  6. Step 6: Final answer
    x = 11,710.99

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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.