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Finding the Fourth Proportional to 28,903.40, 43,322.70 and 12,260.60

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Solution

The fourth proportional to 28,903.40, 43,322.70 and 12,260.60 is: 18,377.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.40 : 43,322.70 = 12,260.60 : x
  2. Step 2: Convert to fraction form
    28,903.40/43,322.70 = 12,260.60/x
  3. Step 3: Cross multiply
    28,903.40x = 43,322.70 × 12,260.60
  4. Step 4: Simplify right side
    28,903.40x = 531,162,295.62
  5. Step 5: Solve for x
    x = 531,162,295.62/28,903.40
  6. Step 6: Final answer
    x = 18,377.16

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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.