Home / 28,237.88-38,969.39-15,491.54

Finding the Fourth Proportional to 28,237.88, 38,969.39 and 15,491.54

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Solution

The fourth proportional to 28,237.88, 38,969.39 and 15,491.54 is: 21,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.88 : 38,969.39 = 15,491.54 : x
  2. Step 2: Convert to fraction form
    28,237.88/38,969.39 = 15,491.54/x
  3. Step 3: Cross multiply
    28,237.88x = 38,969.39 × 15,491.54
  4. Step 4: Simplify right side
    28,237.88x = 603,695,591.66
  5. Step 5: Solve for x
    x = 603,695,591.66/28,237.88
  6. Step 6: Final answer
    x = 21,378.93

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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.