Home / 28,615.24-39,487.94-15,868.95

Finding the Fourth Proportional to 28,615.24, 39,487.94 and 15,868.95

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Solution

The fourth proportional to 28,615.24, 39,487.94 and 15,868.95 is: 21,898.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.24 : 39,487.94 = 15,868.95 : x
  2. Step 2: Convert to fraction form
    28,615.24/39,487.94 = 15,868.95/x
  3. Step 3: Cross multiply
    28,615.24x = 39,487.94 × 15,868.95
  4. Step 4: Simplify right side
    28,615.24x = 626,631,868.68
  5. Step 5: Solve for x
    x = 626,631,868.68/28,615.24
  6. Step 6: Final answer
    x = 21,898.54

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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.