Home / 21,724.07-29,981.73-13,231.17

Finding the Fourth Proportional to 21,724.07, 29,981.73 and 13,231.17

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Solution

The fourth proportional to 21,724.07, 29,981.73 and 13,231.17 is: 18,260.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.07 : 29,981.73 = 13,231.17 : x
  2. Step 2: Convert to fraction form
    21,724.07/29,981.73 = 13,231.17/x
  3. Step 3: Cross multiply
    21,724.07x = 29,981.73 × 13,231.17
  4. Step 4: Simplify right side
    21,724.07x = 396,693,303.71
  5. Step 5: Solve for x
    x = 396,693,303.71/21,724.07
  6. Step 6: Final answer
    x = 18,260.54

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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.