Home / 18,813.20-25,960.10-10,858.05

Finding the Fourth Proportional to 18,813.20, 25,960.10 and 10,858.05

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Solution

The fourth proportional to 18,813.20, 25,960.10 and 10,858.05 is: 14,982.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.20 : 25,960.10 = 10,858.05 : x
  2. Step 2: Convert to fraction form
    18,813.20/25,960.10 = 10,858.05/x
  3. Step 3: Cross multiply
    18,813.20x = 25,960.10 × 10,858.05
  4. Step 4: Simplify right side
    18,813.20x = 281,876,009.51
  5. Step 5: Solve for x
    x = 281,876,009.51/18,813.20
  6. Step 6: Final answer
    x = 14,982.89

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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.