Home / 21,970.26-30,317.73-13,018.62

Finding the Fourth Proportional to 21,970.26, 30,317.73 and 13,018.62

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Solution

The fourth proportional to 21,970.26, 30,317.73 and 13,018.62 is: 17,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.26 : 30,317.73 = 13,018.62 : x
  2. Step 2: Convert to fraction form
    21,970.26/30,317.73 = 13,018.62/x
  3. Step 3: Cross multiply
    21,970.26x = 30,317.73 × 13,018.62
  4. Step 4: Simplify right side
    21,970.26x = 394,695,006.13
  5. Step 5: Solve for x
    x = 394,695,006.13/21,970.26
  6. Step 6: Final answer
    x = 17,964.97

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1.5x scale

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.