Home / 15,748.38-21,729.60-11,970.54

Finding the Fourth Proportional to 15,748.38, 21,729.60 and 11,970.54

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Solution

The fourth proportional to 15,748.38, 21,729.60 and 11,970.54 is: 16,516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.38 : 21,729.60 = 11,970.54 : x
  2. Step 2: Convert to fraction form
    15,748.38/21,729.60 = 11,970.54/x
  3. Step 3: Cross multiply
    15,748.38x = 21,729.60 × 11,970.54
  4. Step 4: Simplify right side
    15,748.38x = 260,115,045.98
  5. Step 5: Solve for x
    x = 260,115,045.98/15,748.38
  6. Step 6: Final answer
    x = 16,516.94

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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.