Home / 28,440.39-39,239.87-18,369.26

Finding the Fourth Proportional to 28,440.39, 39,239.87 and 18,369.26

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Solution

The fourth proportional to 28,440.39, 39,239.87 and 18,369.26 is: 25,344.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.39 : 39,239.87 = 18,369.26 : x
  2. Step 2: Convert to fraction form
    28,440.39/39,239.87 = 18,369.26/x
  3. Step 3: Cross multiply
    28,440.39x = 39,239.87 × 18,369.26
  4. Step 4: Simplify right side
    28,440.39x = 720,807,086.35
  5. Step 5: Solve for x
    x = 720,807,086.35/28,440.39
  6. Step 6: Final answer
    x = 25,344.49

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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.