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Finding the Fourth Proportional to 18,364.70, 25,341.11 and 10,809.36

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Solution

The fourth proportional to 18,364.70, 25,341.11 and 10,809.36 is: 14,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,364.70 : 25,341.11 = 10,809.36 : x
  2. Step 2: Convert to fraction form
    18,364.70/25,341.11 = 10,809.36/x
  3. Step 3: Cross multiply
    18,364.70x = 25,341.11 × 10,809.36
  4. Step 4: Simplify right side
    18,364.70x = 273,921,180.79
  5. Step 5: Solve for x
    x = 273,921,180.79/18,364.70
  6. Step 6: Final answer
    x = 14,915.64

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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.