Home / 13,399.90-20,058.20-9,893.81

Finding the Fourth Proportional to 13,399.90, 20,058.20 and 9,893.81

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Solution

The fourth proportional to 13,399.90, 20,058.20 and 9,893.81 is: 14,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.90 : 20,058.20 = 9,893.81 : x
  2. Step 2: Convert to fraction form
    13,399.90/20,058.20 = 9,893.81/x
  3. Step 3: Cross multiply
    13,399.90x = 20,058.20 × 9,893.81
  4. Step 4: Simplify right side
    13,399.90x = 198,452,057.52
  5. Step 5: Solve for x
    x = 198,452,057.52/13,399.90
  6. Step 6: Final answer
    x = 14,809.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.