Home / 14,142.72-19,517.40-7,855.60

Finding the Fourth Proportional to 14,142.72, 19,517.40 and 7,855.60

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Solution

The fourth proportional to 14,142.72, 19,517.40 and 7,855.60 is: 10,840.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.72 : 19,517.40 = 7,855.60 : x
  2. Step 2: Convert to fraction form
    14,142.72/19,517.40 = 7,855.60/x
  3. Step 3: Cross multiply
    14,142.72x = 19,517.40 × 7,855.60
  4. Step 4: Simplify right side
    14,142.72x = 153,320,887.44
  5. Step 5: Solve for x
    x = 153,320,887.44/14,142.72
  6. Step 6: Final answer
    x = 10,840.98

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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.