Home / 13,135.32-19,711.26-8,755.92

Finding the Fourth Proportional to 13,135.32, 19,711.26 and 8,755.92

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Solution

The fourth proportional to 13,135.32, 19,711.26 and 8,755.92 is: 13,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.32 : 19,711.26 = 8,755.92 : x
  2. Step 2: Convert to fraction form
    13,135.32/19,711.26 = 8,755.92/x
  3. Step 3: Cross multiply
    13,135.32x = 19,711.26 × 8,755.92
  4. Step 4: Simplify right side
    13,135.32x = 172,590,215.66
  5. Step 5: Solve for x
    x = 172,590,215.66/13,135.32
  6. Step 6: Final answer
    x = 13,139.40

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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.