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Finding the Fourth Proportional to 28,999.37, 40,019.12 and 16,424.12

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Solution

The fourth proportional to 28,999.37, 40,019.12 and 16,424.12 is: 22,665.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,999.37 : 40,019.12 = 16,424.12 : x
  2. Step 2: Convert to fraction form
    28,999.37/40,019.12 = 16,424.12/x
  3. Step 3: Cross multiply
    28,999.37x = 40,019.12 × 16,424.12
  4. Step 4: Simplify right side
    28,999.37x = 657,278,546.96
  5. Step 5: Solve for x
    x = 657,278,546.96/28,999.37
  6. Step 6: Final answer
    x = 22,665.27

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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.