Home / 13,090.05-18,055.12-8,612.37

Finding the Fourth Proportional to 13,090.05, 18,055.12 and 8,612.37

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Solution

The fourth proportional to 13,090.05, 18,055.12 and 8,612.37 is: 11,879.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.05 : 18,055.12 = 8,612.37 : x
  2. Step 2: Convert to fraction form
    13,090.05/18,055.12 = 8,612.37/x
  3. Step 3: Cross multiply
    13,090.05x = 18,055.12 × 8,612.37
  4. Step 4: Simplify right side
    13,090.05x = 155,497,373.83
  5. Step 5: Solve for x
    x = 155,497,373.83/13,090.05
  6. Step 6: Final answer
    x = 11,879.05

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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.