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Finding the Fourth Proportional to 12,579.63, 17,368.02 and 7,804.68

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Solution

The fourth proportional to 12,579.63, 17,368.02 and 7,804.68 is: 10,775.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.63 : 17,368.02 = 7,804.68 : x
  2. Step 2: Convert to fraction form
    12,579.63/17,368.02 = 7,804.68/x
  3. Step 3: Cross multiply
    12,579.63x = 17,368.02 × 7,804.68
  4. Step 4: Simplify right side
    12,579.63x = 135,551,838.33
  5. Step 5: Solve for x
    x = 135,551,838.33/12,579.63
  6. Step 6: Final answer
    x = 10,775.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.