Home / 15,103.42-20,843.40-8,389.06

Finding the Fourth Proportional to 15,103.42, 20,843.40 and 8,389.06

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Solution

The fourth proportional to 15,103.42, 20,843.40 and 8,389.06 is: 11,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.42 : 20,843.40 = 8,389.06 : x
  2. Step 2: Convert to fraction form
    15,103.42/20,843.40 = 8,389.06/x
  3. Step 3: Cross multiply
    15,103.42x = 20,843.40 × 8,389.06
  4. Step 4: Simplify right side
    15,103.42x = 174,856,533.20
  5. Step 5: Solve for x
    x = 174,856,533.20/15,103.42
  6. Step 6: Final answer
    x = 11,577.28

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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.