Home / 14,245.26-19,657.44-7,871.78

Finding the Fourth Proportional to 14,245.26, 19,657.44 and 7,871.78

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Solution

The fourth proportional to 14,245.26, 19,657.44 and 7,871.78 is: 10,862.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,245.26 : 19,657.44 = 7,871.78 : x
  2. Step 2: Convert to fraction form
    14,245.26/19,657.44 = 7,871.78/x
  3. Step 3: Cross multiply
    14,245.26x = 19,657.44 × 7,871.78
  4. Step 4: Simplify right side
    14,245.26x = 154,738,944.76
  5. Step 5: Solve for x
    x = 154,738,944.76/14,245.26
  6. Step 6: Final answer
    x = 10,862.49

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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.