Home / 9,865.53-13,611.67-6,680.40

Finding the Fourth Proportional to 9,865.53, 13,611.67 and 6,680.40

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Solution

The fourth proportional to 9,865.53, 13,611.67 and 6,680.40 is: 9,217.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.53 : 13,611.67 = 6,680.40 : x
  2. Step 2: Convert to fraction form
    9,865.53/13,611.67 = 6,680.40/x
  3. Step 3: Cross multiply
    9,865.53x = 13,611.67 × 6,680.40
  4. Step 4: Simplify right side
    9,865.53x = 90,931,400.90
  5. Step 5: Solve for x
    x = 90,931,400.90/9,865.53
  6. Step 6: Final answer
    x = 9,217.09

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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.