Home / 28,295.72-39,074.34-18,247.66

Finding the Fourth Proportional to 28,295.72, 39,074.34 and 18,247.66

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Solution

The fourth proportional to 28,295.72, 39,074.34 and 18,247.66 is: 25,198.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,295.72 : 39,074.34 = 18,247.66 : x
  2. Step 2: Convert to fraction form
    28,295.72/39,074.34 = 18,247.66/x
  3. Step 3: Cross multiply
    28,295.72x = 39,074.34 × 18,247.66
  4. Step 4: Simplify right side
    28,295.72x = 713,015,271.04
  5. Step 5: Solve for x
    x = 713,015,271.04/28,295.72
  6. Step 6: Final answer
    x = 25,198.70

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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.