Home / 21,628.25-29,802.68-15,954.00

Finding the Fourth Proportional to 21,628.25, 29,802.68 and 15,954.00

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Solution

The fourth proportional to 21,628.25, 29,802.68 and 15,954.00 is: 21,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.25 : 29,802.68 = 15,954.00 : x
  2. Step 2: Convert to fraction form
    21,628.25/29,802.68 = 15,954.00/x
  3. Step 3: Cross multiply
    21,628.25x = 29,802.68 × 15,954.00
  4. Step 4: Simplify right side
    21,628.25x = 475,472,166.22
  5. Step 5: Solve for x
    x = 475,472,166.22/21,628.25
  6. Step 6: Final answer
    x = 21,983.85

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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.