Home / 12,220.41-16,864.42-6,915.22

Finding the Fourth Proportional to 12,220.41, 16,864.42 and 6,915.22

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Solution

The fourth proportional to 12,220.41, 16,864.42 and 6,915.22 is: 9,543.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.41 : 16,864.42 = 6,915.22 : x
  2. Step 2: Convert to fraction form
    12,220.41/16,864.42 = 6,915.22/x
  3. Step 3: Cross multiply
    12,220.41x = 16,864.42 × 6,915.22
  4. Step 4: Simplify right side
    12,220.41x = 116,621,222.85
  5. Step 5: Solve for x
    x = 116,621,222.85/12,220.41
  6. Step 6: Final answer
    x = 9,543.15

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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.