Home / 12,090.20-18,113.70-10,362.20

Finding the Fourth Proportional to 12,090.20, 18,113.70 and 10,362.20

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Solution

The fourth proportional to 12,090.20, 18,113.70 and 10,362.20 is: 15,524.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.20 : 18,113.70 = 10,362.20 : x
  2. Step 2: Convert to fraction form
    12,090.20/18,113.70 = 10,362.20/x
  3. Step 3: Cross multiply
    12,090.20x = 18,113.70 × 10,362.20
  4. Step 4: Simplify right side
    12,090.20x = 187,697,782.14
  5. Step 5: Solve for x
    x = 187,697,782.14/12,090.20
  6. Step 6: Final answer
    x = 15,524.79

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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.