Home / 17,720.40-26,580.60-5,408.40

Finding the Fourth Proportional to 17,720.40, 26,580.60 and 5,408.40

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Solution

The fourth proportional to 17,720.40, 26,580.60 and 5,408.40 is: 8,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.40 : 26,580.60 = 5,408.40 : x
  2. Step 2: Convert to fraction form
    17,720.40/26,580.60 = 5,408.40/x
  3. Step 3: Cross multiply
    17,720.40x = 26,580.60 × 5,408.40
  4. Step 4: Simplify right side
    17,720.40x = 143,758,517.04
  5. Step 5: Solve for x
    x = 143,758,517.04/17,720.40
  6. Step 6: Final answer
    x = 8,112.60

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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.