Home / 12,355.03-18,510.99-10,288.33

Finding the Fourth Proportional to 12,355.03, 18,510.99 and 10,288.33

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Solution

The fourth proportional to 12,355.03, 18,510.99 and 10,288.33 is: 15,414.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.03 : 18,510.99 = 10,288.33 : x
  2. Step 2: Convert to fraction form
    12,355.03/18,510.99 = 10,288.33/x
  3. Step 3: Cross multiply
    12,355.03x = 18,510.99 × 10,288.33
  4. Step 4: Simplify right side
    12,355.03x = 190,447,173.75
  5. Step 5: Solve for x
    x = 190,447,173.75/12,355.03
  6. Step 6: Final answer
    x = 15,414.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.