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Finding the Fourth Proportional to 30,005.61, 41,408.04 and 20,944.14

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Solution

The fourth proportional to 30,005.61, 41,408.04 and 20,944.14 is: 28,903.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,005.61 : 41,408.04 = 20,944.14 : x
  2. Step 2: Convert to fraction form
    30,005.61/41,408.04 = 20,944.14/x
  3. Step 3: Cross multiply
    30,005.61x = 41,408.04 × 20,944.14
  4. Step 4: Simplify right side
    30,005.61x = 867,255,579.85
  5. Step 5: Solve for x
    x = 867,255,579.85/30,005.61
  6. Step 6: Final answer
    x = 28,903.12

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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.