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Finding the Fourth Proportional to 26,903.81, 40,355.72 and 8,435.81

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Solution

The fourth proportional to 26,903.81, 40,355.72 and 8,435.81 is: 12,653.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,903.81 : 40,355.72 = 8,435.81 : x
  2. Step 2: Convert to fraction form
    26,903.81/40,355.72 = 8,435.81/x
  3. Step 3: Cross multiply
    26,903.81x = 40,355.72 × 8,435.81
  4. Step 4: Simplify right side
    26,903.81x = 340,433,276.68
  5. Step 5: Solve for x
    x = 340,433,276.68/26,903.81
  6. Step 6: Final answer
    x = 12,653.72

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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.