Home / 15,746.27-21,729.87-8,672.54

Finding the Fourth Proportional to 15,746.27, 21,729.87 and 8,672.54

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Solution

The fourth proportional to 15,746.27, 21,729.87 and 8,672.54 is: 11,968.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.27 : 21,729.87 = 8,672.54 : x
  2. Step 2: Convert to fraction form
    15,746.27/21,729.87 = 8,672.54/x
  3. Step 3: Cross multiply
    15,746.27x = 21,729.87 × 8,672.54
  4. Step 4: Simplify right side
    15,746.27x = 188,453,058.12
  5. Step 5: Solve for x
    x = 188,453,058.12/15,746.27
  6. Step 6: Final answer
    x = 11,968.11

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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.