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Finding the Fourth Proportional to 15,124.10, 20,817.54 and 11,083.82

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Solution

The fourth proportional to 15,124.10, 20,817.54 and 11,083.82 is: 15,256.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.10 : 20,817.54 = 11,083.82 : x
  2. Step 2: Convert to fraction form
    15,124.10/20,817.54 = 11,083.82/x
  3. Step 3: Cross multiply
    15,124.10x = 20,817.54 × 11,083.82
  4. Step 4: Simplify right side
    15,124.10x = 230,737,762.12
  5. Step 5: Solve for x
    x = 230,737,762.12/15,124.10
  6. Step 6: Final answer
    x = 15,256.30

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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.