Home / 12,220.18-16,865.21-6,915.34

Finding the Fourth Proportional to 12,220.18, 16,865.21 and 6,915.34

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Solution

The fourth proportional to 12,220.18, 16,865.21 and 6,915.34 is: 9,543.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.18 : 16,865.21 = 6,915.34 : x
  2. Step 2: Convert to fraction form
    12,220.18/16,865.21 = 6,915.34/x
  3. Step 3: Cross multiply
    12,220.18x = 16,865.21 × 6,915.34
  4. Step 4: Simplify right side
    12,220.18x = 116,628,604.82
  5. Step 5: Solve for x
    x = 116,628,604.82/12,220.18
  6. Step 6: Final answer
    x = 9,543.94

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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.