Home / 20,112.61-30,173.79-6,071.80

Finding the Fourth Proportional to 20,112.61, 30,173.79 and 6,071.80

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Solution

The fourth proportional to 20,112.61, 30,173.79 and 6,071.80 is: 9,109.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.61 : 30,173.79 = 6,071.80 : x
  2. Step 2: Convert to fraction form
    20,112.61/30,173.79 = 6,071.80/x
  3. Step 3: Cross multiply
    20,112.61x = 30,173.79 × 6,071.80
  4. Step 4: Simplify right side
    20,112.61x = 183,209,218.12
  5. Step 5: Solve for x
    x = 183,209,218.12/20,112.61
  6. Step 6: Final answer
    x = 9,109.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.