Home / 19,990.13-29,985.36-6,842.61

Finding the Fourth Proportional to 19,990.13, 29,985.36 and 6,842.61

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Solution

The fourth proportional to 19,990.13, 29,985.36 and 6,842.61 is: 10,263.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.13 : 29,985.36 = 6,842.61 : x
  2. Step 2: Convert to fraction form
    19,990.13/29,985.36 = 6,842.61/x
  3. Step 3: Cross multiply
    19,990.13x = 29,985.36 × 6,842.61
  4. Step 4: Simplify right side
    19,990.13x = 205,178,098.53
  5. Step 5: Solve for x
    x = 205,178,098.53/19,990.13
  6. Step 6: Final answer
    x = 10,263.97

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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.