Home / 28,180.75-38,889.44-15,605.50

Finding the Fourth Proportional to 28,180.75, 38,889.44 and 15,605.50

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Solution

The fourth proportional to 28,180.75, 38,889.44 and 15,605.50 is: 21,535.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.75 : 38,889.44 = 15,605.50 : x
  2. Step 2: Convert to fraction form
    28,180.75/38,889.44 = 15,605.50/x
  3. Step 3: Cross multiply
    28,180.75x = 38,889.44 × 15,605.50
  4. Step 4: Simplify right side
    28,180.75x = 606,889,155.92
  5. Step 5: Solve for x
    x = 606,889,155.92/28,180.75
  6. Step 6: Final answer
    x = 21,535.59

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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.