Home / 13,093.12-18,072.36-7,990.48

Finding the Fourth Proportional to 13,093.12, 18,072.36 and 7,990.48

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Solution

The fourth proportional to 13,093.12, 18,072.36 and 7,990.48 is: 11,029.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,093.12 : 18,072.36 = 7,990.48 : x
  2. Step 2: Convert to fraction form
    13,093.12/18,072.36 = 7,990.48/x
  3. Step 3: Cross multiply
    13,093.12x = 18,072.36 × 7,990.48
  4. Step 4: Simplify right side
    13,093.12x = 144,406,831.13
  5. Step 5: Solve for x
    x = 144,406,831.13/13,093.12
  6. Step 6: Final answer
    x = 11,029.21

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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.