Home / 12,571.56-18,862.80-4,782.60

Finding the Fourth Proportional to 12,571.56, 18,862.80 and 4,782.60

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Solution

The fourth proportional to 12,571.56, 18,862.80 and 4,782.60 is: 7,175.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.56 : 18,862.80 = 4,782.60 : x
  2. Step 2: Convert to fraction form
    12,571.56/18,862.80 = 4,782.60/x
  3. Step 3: Cross multiply
    12,571.56x = 18,862.80 × 4,782.60
  4. Step 4: Simplify right side
    12,571.56x = 90,213,227.28
  5. Step 5: Solve for x
    x = 90,213,227.28/12,571.56
  6. Step 6: Final answer
    x = 7,175.98

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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.