Home / 15,768.51-21,760.48-8,695.32

Finding the Fourth Proportional to 15,768.51, 21,760.48 and 8,695.32

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Solution

The fourth proportional to 15,768.51, 21,760.48 and 8,695.32 is: 11,999.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.51 : 21,760.48 = 8,695.32 : x
  2. Step 2: Convert to fraction form
    15,768.51/21,760.48 = 8,695.32/x
  3. Step 3: Cross multiply
    15,768.51x = 21,760.48 × 8,695.32
  4. Step 4: Simplify right side
    15,768.51x = 189,214,336.95
  5. Step 5: Solve for x
    x = 189,214,336.95/15,768.51
  6. Step 6: Final answer
    x = 11,999.51

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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.