Home / 15,768.34-21,761.25-8,694.74

Finding the Fourth Proportional to 15,768.34, 21,761.25 and 8,694.74

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Solution

The fourth proportional to 15,768.34, 21,761.25 and 8,694.74 is: 11,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.34 : 21,761.25 = 8,694.74 : x
  2. Step 2: Convert to fraction form
    15,768.34/21,761.25 = 8,694.74/x
  3. Step 3: Cross multiply
    15,768.34x = 21,761.25 × 8,694.74
  4. Step 4: Simplify right side
    15,768.34x = 189,208,410.83
  5. Step 5: Solve for x
    x = 189,208,410.83/15,768.34
  6. Step 6: Final answer
    x = 11,999.26

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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.