Home / 21,972.96-30,328.11-12,546.99

Finding the Fourth Proportional to 21,972.96, 30,328.11 and 12,546.99

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Solution

The fourth proportional to 21,972.96, 30,328.11 and 12,546.99 is: 17,317.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.96 : 30,328.11 = 12,546.99 : x
  2. Step 2: Convert to fraction form
    21,972.96/30,328.11 = 12,546.99/x
  3. Step 3: Cross multiply
    21,972.96x = 30,328.11 × 12,546.99
  4. Step 4: Simplify right side
    21,972.96x = 380,526,492.89
  5. Step 5: Solve for x
    x = 380,526,492.89/21,972.96
  6. Step 6: Final answer
    x = 17,317.94

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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.