Home / 13,145.32-19,717.98-6,987.88

Finding the Fourth Proportional to 13,145.32, 19,717.98 and 6,987.88

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Solution

The fourth proportional to 13,145.32, 19,717.98 and 6,987.88 is: 10,481.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.32 : 19,717.98 = 6,987.88 : x
  2. Step 2: Convert to fraction form
    13,145.32/19,717.98 = 6,987.88/x
  3. Step 3: Cross multiply
    13,145.32x = 19,717.98 × 6,987.88
  4. Step 4: Simplify right side
    13,145.32x = 137,786,878.08
  5. Step 5: Solve for x
    x = 137,786,878.08/13,145.32
  6. Step 6: Final answer
    x = 10,481.82

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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.