Home / 21,618.50-29,831.36-15,956.33

Finding the Fourth Proportional to 21,618.50, 29,831.36 and 15,956.33

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Solution

The fourth proportional to 21,618.50, 29,831.36 and 15,956.33 is: 22,018.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,618.50 : 29,831.36 = 15,956.33 : x
  2. Step 2: Convert to fraction form
    21,618.50/29,831.36 = 15,956.33/x
  3. Step 3: Cross multiply
    21,618.50x = 29,831.36 × 15,956.33
  4. Step 4: Simplify right side
    21,618.50x = 475,998,795.57
  5. Step 5: Solve for x
    x = 475,998,795.57/21,618.50
  6. Step 6: Final answer
    x = 22,018.13

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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.