Home / 13,990.78-20,987.52-6,195.34

Finding the Fourth Proportional to 13,990.78, 20,987.52 and 6,195.34

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Solution

The fourth proportional to 13,990.78, 20,987.52 and 6,195.34 is: 9,293.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.78 : 20,987.52 = 6,195.34 : x
  2. Step 2: Convert to fraction form
    13,990.78/20,987.52 = 6,195.34/x
  3. Step 3: Cross multiply
    13,990.78x = 20,987.52 × 6,195.34
  4. Step 4: Simplify right side
    13,990.78x = 130,024,822.16
  5. Step 5: Solve for x
    x = 130,024,822.16/13,990.78
  6. Step 6: Final answer
    x = 9,293.61

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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.