Home / 12,105.40-18,166.20-5,528.20

Finding the Fourth Proportional to 12,105.40, 18,166.20 and 5,528.20

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Solution

The fourth proportional to 12,105.40, 18,166.20 and 5,528.20 is: 8,296.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,105.40 : 18,166.20 = 5,528.20 : x
  2. Step 2: Convert to fraction form
    12,105.40/18,166.20 = 5,528.20/x
  3. Step 3: Cross multiply
    12,105.40x = 18,166.20 × 5,528.20
  4. Step 4: Simplify right side
    12,105.40x = 100,426,386.84
  5. Step 5: Solve for x
    x = 100,426,386.84/12,105.40
  6. Step 6: Final answer
    x = 8,296.00

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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.