Home / 21,838.06-30,128.55-12,401.14

Finding the Fourth Proportional to 21,838.06, 30,128.55 and 12,401.14

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Solution

The fourth proportional to 21,838.06, 30,128.55 and 12,401.14 is: 17,109.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.06 : 30,128.55 = 12,401.14 : x
  2. Step 2: Convert to fraction form
    21,838.06/30,128.55 = 12,401.14/x
  3. Step 3: Cross multiply
    21,838.06x = 30,128.55 × 12,401.14
  4. Step 4: Simplify right side
    21,838.06x = 373,628,366.55
  5. Step 5: Solve for x
    x = 373,628,366.55/21,838.06
  6. Step 6: Final answer
    x = 17,109.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.