Home / 11,319.60-15,622.20-6,603.60

Finding the Fourth Proportional to 11,319.60, 15,622.20 and 6,603.60

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Solution

The fourth proportional to 11,319.60, 15,622.20 and 6,603.60 is: 9,113.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.60 : 15,622.20 = 6,603.60 : x
  2. Step 2: Convert to fraction form
    11,319.60/15,622.20 = 6,603.60/x
  3. Step 3: Cross multiply
    11,319.60x = 15,622.20 × 6,603.60
  4. Step 4: Simplify right side
    11,319.60x = 103,162,759.92
  5. Step 5: Solve for x
    x = 103,162,759.92/11,319.60
  6. Step 6: Final answer
    x = 9,113.64

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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.