Home / 9,915.32-13,680.42-6,136.67

Finding the Fourth Proportional to 9,915.32, 13,680.42 and 6,136.67

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Solution

The fourth proportional to 9,915.32, 13,680.42 and 6,136.67 is: 8,466.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.32 : 13,680.42 = 6,136.67 : x
  2. Step 2: Convert to fraction form
    9,915.32/13,680.42 = 6,136.67/x
  3. Step 3: Cross multiply
    9,915.32x = 13,680.42 × 6,136.67
  4. Step 4: Simplify right side
    9,915.32x = 83,952,223.00
  5. Step 5: Solve for x
    x = 83,952,223.00/9,915.32
  6. Step 6: Final answer
    x = 8,466.92

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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.