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Finding the Fourth Proportional to 18,860.65, 26,025.71 and 10,905.44

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Solution

The fourth proportional to 18,860.65, 26,025.71 and 10,905.44 is: 15,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.65 : 26,025.71 = 10,905.44 : x
  2. Step 2: Convert to fraction form
    18,860.65/26,025.71 = 10,905.44/x
  3. Step 3: Cross multiply
    18,860.65x = 26,025.71 × 10,905.44
  4. Step 4: Simplify right side
    18,860.65x = 283,821,634.21
  5. Step 5: Solve for x
    x = 283,821,634.21/18,860.65
  6. Step 6: Final answer
    x = 15,048.35

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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.