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Finding the Fourth Proportional to 34,322.40, 47,372.40 and 20,183.40

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Solution

The fourth proportional to 34,322.40, 47,372.40 and 20,183.40 is: 27,857.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,322.40 : 47,372.40 = 20,183.40 : x
  2. Step 2: Convert to fraction form
    34,322.40/47,372.40 = 20,183.40/x
  3. Step 3: Cross multiply
    34,322.40x = 47,372.40 × 20,183.40
  4. Step 4: Simplify right side
    34,322.40x = 956,136,098.16
  5. Step 5: Solve for x
    x = 956,136,098.16/34,322.40
  6. Step 6: Final answer
    x = 27,857.50

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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.