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Finding the Fourth Proportional to 19,910.56, 29,969.56 and 16,903.84

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Solution

The fourth proportional to 19,910.56, 29,969.56 and 16,903.84 is: 25,443.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,910.56 : 29,969.56 = 16,903.84 : x
  2. Step 2: Convert to fraction form
    19,910.56/29,969.56 = 16,903.84/x
  3. Step 3: Cross multiply
    19,910.56x = 29,969.56 × 16,903.84
  4. Step 4: Simplify right side
    19,910.56x = 506,600,647.11
  5. Step 5: Solve for x
    x = 506,600,647.11/19,910.56
  6. Step 6: Final answer
    x = 25,443.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.