Home / 20,954.22-28,916.08-11,522.72

Finding the Fourth Proportional to 20,954.22, 28,916.08 and 11,522.72

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Solution

The fourth proportional to 20,954.22, 28,916.08 and 11,522.72 is: 15,900.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.22 : 28,916.08 = 11,522.72 : x
  2. Step 2: Convert to fraction form
    20,954.22/28,916.08 = 11,522.72/x
  3. Step 3: Cross multiply
    20,954.22x = 28,916.08 × 11,522.72
  4. Step 4: Simplify right side
    20,954.22x = 333,191,893.34
  5. Step 5: Solve for x
    x = 333,191,893.34/20,954.22
  6. Step 6: Final answer
    x = 15,900.94

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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.