Home / 21,391.32-29,521.06-11,831.17

Finding the Fourth Proportional to 21,391.32, 29,521.06 and 11,831.17

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Solution

The fourth proportional to 21,391.32, 29,521.06 and 11,831.17 is: 16,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.32 : 29,521.06 = 11,831.17 : x
  2. Step 2: Convert to fraction form
    21,391.32/29,521.06 = 11,831.17/x
  3. Step 3: Cross multiply
    21,391.32x = 29,521.06 × 11,831.17
  4. Step 4: Simplify right side
    21,391.32x = 349,268,697.96
  5. Step 5: Solve for x
    x = 349,268,697.96/21,391.32
  6. Step 6: Final answer
    x = 16,327.59

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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.