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Finding the Fourth Proportional to 12,563.60, 17,341.24 and 7,845.20

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Solution

The fourth proportional to 12,563.60, 17,341.24 and 7,845.20 is: 10,828.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,563.60 : 17,341.24 = 7,845.20 : x
  2. Step 2: Convert to fraction form
    12,563.60/17,341.24 = 7,845.20/x
  3. Step 3: Cross multiply
    12,563.60x = 17,341.24 × 7,845.20
  4. Step 4: Simplify right side
    12,563.60x = 136,045,496.05
  5. Step 5: Solve for x
    x = 136,045,496.05/12,563.60
  6. Step 6: Final answer
    x = 10,828.54

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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.