Home / 15,852.64-21,876.45-8,682.49

Finding the Fourth Proportional to 15,852.64, 21,876.45 and 8,682.49

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Solution

The fourth proportional to 15,852.64, 21,876.45 and 8,682.49 is: 11,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,852.64 : 21,876.45 = 8,682.49 : x
  2. Step 2: Convert to fraction form
    15,852.64/21,876.45 = 8,682.49/x
  3. Step 3: Cross multiply
    15,852.64x = 21,876.45 × 8,682.49
  4. Step 4: Simplify right side
    15,852.64x = 189,942,058.36
  5. Step 5: Solve for x
    x = 189,942,058.36/15,852.64
  6. Step 6: Final answer
    x = 11,981.73

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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.