Home / 28,993.41-39,983.36-18,918.63

Finding the Fourth Proportional to 28,993.41, 39,983.36 and 18,918.63

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Solution

The fourth proportional to 28,993.41, 39,983.36 and 18,918.63 is: 26,089.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.41 : 39,983.36 = 18,918.63 : x
  2. Step 2: Convert to fraction form
    28,993.41/39,983.36 = 18,918.63/x
  3. Step 3: Cross multiply
    28,993.41x = 39,983.36 × 18,918.63
  4. Step 4: Simplify right side
    28,993.41x = 756,430,299.40
  5. Step 5: Solve for x
    x = 756,430,299.40/28,993.41
  6. Step 6: Final answer
    x = 26,089.73

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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.