Home / 28,811.62-39,749.70-16,870.60

Finding the Fourth Proportional to 28,811.62, 39,749.70 and 16,870.60

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Solution

The fourth proportional to 28,811.62, 39,749.70 and 16,870.60 is: 23,275.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.62 : 39,749.70 = 16,870.60 : x
  2. Step 2: Convert to fraction form
    28,811.62/39,749.70 = 16,870.60/x
  3. Step 3: Cross multiply
    28,811.62x = 39,749.70 × 16,870.60
  4. Step 4: Simplify right side
    28,811.62x = 670,601,288.82
  5. Step 5: Solve for x
    x = 670,601,288.82/28,811.62
  6. Step 6: Final answer
    x = 23,275.38

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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.