Home / 13,395.12-18,485.64-8,090.88

Finding the Fourth Proportional to 13,395.12, 18,485.64 and 8,090.88

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Solution

The fourth proportional to 13,395.12, 18,485.64 and 8,090.88 is: 11,165.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.12 : 18,485.64 = 8,090.88 : x
  2. Step 2: Convert to fraction form
    13,395.12/18,485.64 = 8,090.88/x
  3. Step 3: Cross multiply
    13,395.12x = 18,485.64 × 8,090.88
  4. Step 4: Simplify right side
    13,395.12x = 149,565,094.96
  5. Step 5: Solve for x
    x = 149,565,094.96/13,395.12
  6. Step 6: Final answer
    x = 11,165.64

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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.