Home / 18,181.49-25,089.80-10,115.10

Finding the Fourth Proportional to 18,181.49, 25,089.80 and 10,115.10

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Solution

The fourth proportional to 18,181.49, 25,089.80 and 10,115.10 is: 13,958.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181.49 : 25,089.80 = 10,115.10 : x
  2. Step 2: Convert to fraction form
    18,181.49/25,089.80 = 10,115.10/x
  3. Step 3: Cross multiply
    18,181.49x = 25,089.80 × 10,115.10
  4. Step 4: Simplify right side
    18,181.49x = 253,785,785.40
  5. Step 5: Solve for x
    x = 253,785,785.40/18,181.49
  6. Step 6: Final answer
    x = 13,958.47

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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.