Home / 13,267.20-18,307.20-9,081.60

Finding the Fourth Proportional to 13,267.20, 18,307.20 and 9,081.60

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Solution

The fourth proportional to 13,267.20, 18,307.20 and 9,081.60 is: 12,531.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,267.20 : 18,307.20 = 9,081.60 : x
  2. Step 2: Convert to fraction form
    13,267.20/18,307.20 = 9,081.60/x
  3. Step 3: Cross multiply
    13,267.20x = 18,307.20 × 9,081.60
  4. Step 4: Simplify right side
    13,267.20x = 166,258,667.52
  5. Step 5: Solve for x
    x = 166,258,667.52/13,267.20
  6. Step 6: Final answer
    x = 12,531.56

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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.