Home / 9,211.70-13,809.45-5,515.40

Finding the Fourth Proportional to 9,211.70, 13,809.45 and 5,515.40

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Solution

The fourth proportional to 9,211.70, 13,809.45 and 5,515.40 is: 8,268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.70 : 13,809.45 = 5,515.40 : x
  2. Step 2: Convert to fraction form
    9,211.70/13,809.45 = 5,515.40/x
  3. Step 3: Cross multiply
    9,211.70x = 13,809.45 × 5,515.40
  4. Step 4: Simplify right side
    9,211.70x = 76,164,640.53
  5. Step 5: Solve for x
    x = 76,164,640.53/9,211.70
  6. Step 6: Final answer
    x = 8,268.25

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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.