Home / 13,309.91-19,968.29-4,990.04

Finding the Fourth Proportional to 13,309.91, 19,968.29 and 4,990.04

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Solution

The fourth proportional to 13,309.91, 19,968.29 and 4,990.04 is: 7,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.91 : 19,968.29 = 4,990.04 : x
  2. Step 2: Convert to fraction form
    13,309.91/19,968.29 = 4,990.04/x
  3. Step 3: Cross multiply
    13,309.91x = 19,968.29 × 4,990.04
  4. Step 4: Simplify right side
    13,309.91x = 99,642,565.83
  5. Step 5: Solve for x
    x = 99,642,565.83/13,309.91
  6. Step 6: Final answer
    x = 7,486.34

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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.