Home / 12,022.60-18,012.30-7,400.20

Finding the Fourth Proportional to 12,022.60, 18,012.30 and 7,400.20

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Solution

The fourth proportional to 12,022.60, 18,012.30 and 7,400.20 is: 11,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,022.60 : 18,012.30 = 7,400.20 : x
  2. Step 2: Convert to fraction form
    12,022.60/18,012.30 = 7,400.20/x
  3. Step 3: Cross multiply
    12,022.60x = 18,012.30 × 7,400.20
  4. Step 4: Simplify right side
    12,022.60x = 133,294,622.46
  5. Step 5: Solve for x
    x = 133,294,622.46/12,022.60
  6. Step 6: Final answer
    x = 11,087.00

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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.