Home / 28,197.31-38,912.27-15,450.98

Finding the Fourth Proportional to 28,197.31, 38,912.27 and 15,450.98

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Solution

The fourth proportional to 28,197.31, 38,912.27 and 15,450.98 is: 21,322.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.31 : 38,912.27 = 15,450.98 : x
  2. Step 2: Convert to fraction form
    28,197.31/38,912.27 = 15,450.98/x
  3. Step 3: Cross multiply
    28,197.31x = 38,912.27 × 15,450.98
  4. Step 4: Simplify right side
    28,197.31x = 601,232,549.59
  5. Step 5: Solve for x
    x = 601,232,549.59/28,197.31
  6. Step 6: Final answer
    x = 21,322.34

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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.