Home / 13,102.13-18,080.89-7,133.79

Finding the Fourth Proportional to 13,102.13, 18,080.89 and 7,133.79

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Solution

The fourth proportional to 13,102.13, 18,080.89 and 7,133.79 is: 9,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.13 : 18,080.89 = 7,133.79 : x
  2. Step 2: Convert to fraction form
    13,102.13/18,080.89 = 7,133.79/x
  3. Step 3: Cross multiply
    13,102.13x = 18,080.89 × 7,133.79
  4. Step 4: Simplify right side
    13,102.13x = 128,985,272.27
  5. Step 5: Solve for x
    x = 128,985,272.27/13,102.13
  6. Step 6: Final answer
    x = 9,844.60

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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.