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Finding the Fourth Proportional to 21,593.95, 29,800.19 and 11,903.78

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Solution

The fourth proportional to 21,593.95, 29,800.19 and 11,903.78 is: 16,427.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,593.95 : 29,800.19 = 11,903.78 : x
  2. Step 2: Convert to fraction form
    21,593.95/29,800.19 = 11,903.78/x
  3. Step 3: Cross multiply
    21,593.95x = 29,800.19 × 11,903.78
  4. Step 4: Simplify right side
    21,593.95x = 354,735,009.98
  5. Step 5: Solve for x
    x = 354,735,009.98/21,593.95
  6. Step 6: Final answer
    x = 16,427.52

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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.