Home / 13,309.97-19,968.33-4,990.01

Finding the Fourth Proportional to 13,309.97, 19,968.33 and 4,990.01

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Solution

The fourth proportional to 13,309.97, 19,968.33 and 4,990.01 is: 7,486.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.97 : 19,968.33 = 4,990.01 : x
  2. Step 2: Convert to fraction form
    13,309.97/19,968.33 = 4,990.01/x
  3. Step 3: Cross multiply
    13,309.97x = 19,968.33 × 4,990.01
  4. Step 4: Simplify right side
    13,309.97x = 99,642,066.54
  5. Step 5: Solve for x
    x = 99,642,066.54/13,309.97
  6. Step 6: Final answer
    x = 7,486.28

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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.