Home / 18,486.36-25,511.22-10,103.40

Finding the Fourth Proportional to 18,486.36, 25,511.22 and 10,103.40

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Solution

The fourth proportional to 18,486.36, 25,511.22 and 10,103.40 is: 13,942.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.36 : 25,511.22 = 10,103.40 : x
  2. Step 2: Convert to fraction form
    18,486.36/25,511.22 = 10,103.40/x
  3. Step 3: Cross multiply
    18,486.36x = 25,511.22 × 10,103.40
  4. Step 4: Simplify right side
    18,486.36x = 257,750,060.15
  5. Step 5: Solve for x
    x = 257,750,060.15/18,486.36
  6. Step 6: Final answer
    x = 13,942.72

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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.