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Finding the Fourth Proportional to 29,977.80, 44,982.90 and 13,340.40

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Solution

The fourth proportional to 29,977.80, 44,982.90 and 13,340.40 is: 20,017.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,977.80 : 44,982.90 = 13,340.40 : x
  2. Step 2: Convert to fraction form
    29,977.80/44,982.90 = 13,340.40/x
  3. Step 3: Cross multiply
    29,977.80x = 44,982.90 × 13,340.40
  4. Step 4: Simplify right side
    29,977.80x = 600,089,879.16
  5. Step 5: Solve for x
    x = 600,089,879.16/29,977.80
  6. Step 6: Final answer
    x = 20,017.81

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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.