Home / 28,475.28-39,295.26-15,900.30

Finding the Fourth Proportional to 28,475.28, 39,295.26 and 15,900.30

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Solution

The fourth proportional to 28,475.28, 39,295.26 and 15,900.30 is: 21,942.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.28 : 39,295.26 = 15,900.30 : x
  2. Step 2: Convert to fraction form
    28,475.28/39,295.26 = 15,900.30/x
  3. Step 3: Cross multiply
    28,475.28x = 39,295.26 × 15,900.30
  4. Step 4: Simplify right side
    28,475.28x = 624,806,422.58
  5. Step 5: Solve for x
    x = 624,806,422.58/28,475.28
  6. Step 6: Final answer
    x = 21,942.06

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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.