Home / 12,289.36-18,411.30-6,734.44

Finding the Fourth Proportional to 12,289.36, 18,411.30 and 6,734.44

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Solution

The fourth proportional to 12,289.36, 18,411.30 and 6,734.44 is: 10,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.36 : 18,411.30 = 6,734.44 : x
  2. Step 2: Convert to fraction form
    12,289.36/18,411.30 = 6,734.44/x
  3. Step 3: Cross multiply
    12,289.36x = 18,411.30 × 6,734.44
  4. Step 4: Simplify right side
    12,289.36x = 123,989,795.17
  5. Step 5: Solve for x
    x = 123,989,795.17/12,289.36
  6. Step 6: Final answer
    x = 10,089.20

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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.