Home / 12,007.75-18,012.14-3,688.10

Finding the Fourth Proportional to 12,007.75, 18,012.14 and 3,688.10

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Solution

The fourth proportional to 12,007.75, 18,012.14 and 3,688.10 is: 5,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.75 : 18,012.14 = 3,688.10 : x
  2. Step 2: Convert to fraction form
    12,007.75/18,012.14 = 3,688.10/x
  3. Step 3: Cross multiply
    12,007.75x = 18,012.14 × 3,688.10
  4. Step 4: Simplify right side
    12,007.75x = 66,430,528.50
  5. Step 5: Solve for x
    x = 66,430,528.50/12,007.75
  6. Step 6: Final answer
    x = 5,532.30

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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.