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Finding the Fourth Proportional to 29,980.98, 44,994.97 and 20,916.14

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Solution

The fourth proportional to 29,980.98, 44,994.97 and 20,916.14 is: 31,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,980.98 : 44,994.97 = 20,916.14 : x
  2. Step 2: Convert to fraction form
    29,980.98/44,994.97 = 20,916.14/x
  3. Step 3: Cross multiply
    29,980.98x = 44,994.97 × 20,916.14
  4. Step 4: Simplify right side
    29,980.98x = 941,121,152.01
  5. Step 5: Solve for x
    x = 941,121,152.01/29,980.98
  6. Step 6: Final answer
    x = 31,390.61

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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.