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Finding the Fourth Proportional to 26,903.71, 40,355.57 and 12,109.87

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Solution

The fourth proportional to 26,903.71, 40,355.57 and 12,109.87 is: 18,164.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,903.71 : 40,355.57 = 12,109.87 : x
  2. Step 2: Convert to fraction form
    26,903.71/40,355.57 = 12,109.87/x
  3. Step 3: Cross multiply
    26,903.71x = 40,355.57 × 12,109.87
  4. Step 4: Simplify right side
    26,903.71x = 488,700,706.48
  5. Step 5: Solve for x
    x = 488,700,706.48/26,903.71
  6. Step 6: Final answer
    x = 18,164.81

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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.