Home / 28,319.80-39,070.42-18,247.44

Finding the Fourth Proportional to 28,319.80, 39,070.42 and 18,247.44

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Solution

The fourth proportional to 28,319.80, 39,070.42 and 18,247.44 is: 25,174.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.80 : 39,070.42 = 18,247.44 : x
  2. Step 2: Convert to fraction form
    28,319.80/39,070.42 = 18,247.44/x
  3. Step 3: Cross multiply
    28,319.80x = 39,070.42 × 18,247.44
  4. Step 4: Simplify right side
    28,319.80x = 712,935,144.72
  5. Step 5: Solve for x
    x = 712,935,144.72/28,319.80
  6. Step 6: Final answer
    x = 25,174.44

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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.