Home / 21,831.06-30,125.06-12,401.04

Finding the Fourth Proportional to 21,831.06, 30,125.06 and 12,401.04

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Solution

The fourth proportional to 21,831.06, 30,125.06 and 12,401.04 is: 17,112.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.06 : 30,125.06 = 12,401.04 : x
  2. Step 2: Convert to fraction form
    21,831.06/30,125.06 = 12,401.04/x
  3. Step 3: Cross multiply
    21,831.06x = 30,125.06 × 12,401.04
  4. Step 4: Simplify right side
    21,831.06x = 373,582,074.06
  5. Step 5: Solve for x
    x = 373,582,074.06/21,831.06
  6. Step 6: Final answer
    x = 17,112.41

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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.