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Finding the Fourth Proportional to 18,150.63, 25,053.09 and 10,980.57

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Solution

The fourth proportional to 18,150.63, 25,053.09 and 10,980.57 is: 15,156.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,150.63 : 25,053.09 = 10,980.57 : x
  2. Step 2: Convert to fraction form
    18,150.63/25,053.09 = 10,980.57/x
  3. Step 3: Cross multiply
    18,150.63x = 25,053.09 × 10,980.57
  4. Step 4: Simplify right side
    18,150.63x = 275,097,208.46
  5. Step 5: Solve for x
    x = 275,097,208.46/18,150.63
  6. Step 6: Final answer
    x = 15,156.34

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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.