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Finding the Fourth Proportional to 12,804.21, 19,208.93 and 7,260.03

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Solution

The fourth proportional to 12,804.21, 19,208.93 and 7,260.03 is: 10,891.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,804.21 : 19,208.93 = 7,260.03 : x
  2. Step 2: Convert to fraction form
    12,804.21/19,208.93 = 7,260.03/x
  3. Step 3: Cross multiply
    12,804.21x = 19,208.93 × 7,260.03
  4. Step 4: Simplify right side
    12,804.21x = 139,457,371.77
  5. Step 5: Solve for x
    x = 139,457,371.77/12,804.21
  6. Step 6: Final answer
    x = 10,891.52

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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.