Home / 20,916.22-28,824.54-20,531.92

Finding the Fourth Proportional to 20,916.22, 28,824.54 and 20,531.92

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Solution

The fourth proportional to 20,916.22, 28,824.54 and 20,531.92 is: 28,294.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.22 : 28,824.54 = 20,531.92 : x
  2. Step 2: Convert to fraction form
    20,916.22/28,824.54 = 20,531.92/x
  3. Step 3: Cross multiply
    20,916.22x = 28,824.54 × 20,531.92
  4. Step 4: Simplify right side
    20,916.22x = 591,823,149.32
  5. Step 5: Solve for x
    x = 591,823,149.32/20,916.22
  6. Step 6: Final answer
    x = 28,294.94

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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.