Home / 20,941.38-28,889.25-12,443.76

Finding the Fourth Proportional to 20,941.38, 28,889.25 and 12,443.76

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Solution

The fourth proportional to 20,941.38, 28,889.25 and 12,443.76 is: 17,166.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.38 : 28,889.25 = 12,443.76 : x
  2. Step 2: Convert to fraction form
    20,941.38/28,889.25 = 12,443.76/x
  3. Step 3: Cross multiply
    20,941.38x = 28,889.25 × 12,443.76
  4. Step 4: Simplify right side
    20,941.38x = 359,490,893.58
  5. Step 5: Solve for x
    x = 359,490,893.58/20,941.38
  6. Step 6: Final answer
    x = 17,166.53

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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.