Home / 13,403.38-20,118.58-11,853.58

Finding the Fourth Proportional to 13,403.38, 20,118.58 and 11,853.58

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Solution

The fourth proportional to 13,403.38, 20,118.58 and 11,853.58 is: 17,792.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.38 : 20,118.58 = 11,853.58 : x
  2. Step 2: Convert to fraction form
    13,403.38/20,118.58 = 11,853.58/x
  3. Step 3: Cross multiply
    13,403.38x = 20,118.58 × 11,853.58
  4. Step 4: Simplify right side
    13,403.38x = 238,477,197.52
  5. Step 5: Solve for x
    x = 238,477,197.52/13,403.38
  6. Step 6: Final answer
    x = 17,792.32

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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.