Home / 20,941.56-28,897.08-11,508.36

Finding the Fourth Proportional to 20,941.56, 28,897.08 and 11,508.36

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Solution

The fourth proportional to 20,941.56, 28,897.08 and 11,508.36 is: 15,880.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.56 : 28,897.08 = 11,508.36 : x
  2. Step 2: Convert to fraction form
    20,941.56/28,897.08 = 11,508.36/x
  3. Step 3: Cross multiply
    20,941.56x = 28,897.08 × 11,508.36
  4. Step 4: Simplify right side
    20,941.56x = 332,557,999.59
  5. Step 5: Solve for x
    x = 332,557,999.59/20,941.56
  6. Step 6: Final answer
    x = 15,880.29

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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.