Home / 13,091.06-18,065.42-7,122.90

Finding the Fourth Proportional to 13,091.06, 18,065.42 and 7,122.90

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Solution

The fourth proportional to 13,091.06, 18,065.42 and 7,122.90 is: 9,829.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.06 : 18,065.42 = 7,122.90 : x
  2. Step 2: Convert to fraction form
    13,091.06/18,065.42 = 7,122.90/x
  3. Step 3: Cross multiply
    13,091.06x = 18,065.42 × 7,122.90
  4. Step 4: Simplify right side
    13,091.06x = 128,678,180.12
  5. Step 5: Solve for x
    x = 128,678,180.12/13,091.06
  6. Step 6: Final answer
    x = 9,829.47

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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.