Home / 13,090.32-18,060.84-8,122.32

Finding the Fourth Proportional to 13,090.32, 18,060.84 and 8,122.32

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Solution

The fourth proportional to 13,090.32, 18,060.84 and 8,122.32 is: 11,206.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.32 : 18,060.84 = 8,122.32 : x
  2. Step 2: Convert to fraction form
    13,090.32/18,060.84 = 8,122.32/x
  3. Step 3: Cross multiply
    13,090.32x = 18,060.84 × 8,122.32
  4. Step 4: Simplify right side
    13,090.32x = 146,695,921.95
  5. Step 5: Solve for x
    x = 146,695,921.95/13,090.32
  6. Step 6: Final answer
    x = 11,206.44

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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.