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Finding the Fourth Proportional to 29,647.80, 44,471.70 and 12,130.20

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Solution

The fourth proportional to 29,647.80, 44,471.70 and 12,130.20 is: 18,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,647.80 : 44,471.70 = 12,130.20 : x
  2. Step 2: Convert to fraction form
    29,647.80/44,471.70 = 12,130.20/x
  3. Step 3: Cross multiply
    29,647.80x = 44,471.70 × 12,130.20
  4. Step 4: Simplify right side
    29,647.80x = 539,450,615.34
  5. Step 5: Solve for x
    x = 539,450,615.34/29,647.80
  6. Step 6: Final answer
    x = 18,195.30

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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.