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Finding the Fourth Proportional to 21,856.77, 32,800.95 and 8,701.56

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Solution

The fourth proportional to 21,856.77, 32,800.95 and 8,701.56 is: 13,058.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.77 : 32,800.95 = 8,701.56 : x
  2. Step 2: Convert to fraction form
    21,856.77/32,800.95 = 8,701.56/x
  3. Step 3: Cross multiply
    21,856.77x = 32,800.95 × 8,701.56
  4. Step 4: Simplify right side
    21,856.77x = 285,419,434.48
  5. Step 5: Solve for x
    x = 285,419,434.48/21,856.77
  6. Step 6: Final answer
    x = 13,058.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.