Home / 12,580.61-17,361.43-6,915.60

Finding the Fourth Proportional to 12,580.61, 17,361.43 and 6,915.60

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Solution

The fourth proportional to 12,580.61, 17,361.43 and 6,915.60 is: 9,543.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.61 : 17,361.43 = 6,915.60 : x
  2. Step 2: Convert to fraction form
    12,580.61/17,361.43 = 6,915.60/x
  3. Step 3: Cross multiply
    12,580.61x = 17,361.43 × 6,915.60
  4. Step 4: Simplify right side
    12,580.61x = 120,064,618.50
  5. Step 5: Solve for x
    x = 120,064,618.50/12,580.61
  6. Step 6: Final answer
    x = 9,543.63

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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.