Home / 13,990.48-19,308.71-8,021

Finding the Fourth Proportional to 13,990.48, 19,308.71 and 8,021

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Solution

The fourth proportional to 13,990.48, 19,308.71 and 8,021 is: 11,070.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.48 : 19,308.71 = 8,021 : x
  2. Step 2: Convert to fraction form
    13,990.48/19,308.71 = 8,021/x
  3. Step 3: Cross multiply
    13,990.48x = 19,308.71 × 8,021
  4. Step 4: Simplify right side
    13,990.48x = 154,875,162.91
  5. Step 5: Solve for x
    x = 154,875,162.91/13,990.48
  6. Step 6: Final answer
    x = 11,070.04

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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.