Home / 12,625.56-18,915.66-7,428.60

Finding the Fourth Proportional to 12,625.56, 18,915.66 and 7,428.60

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Solution

The fourth proportional to 12,625.56, 18,915.66 and 7,428.60 is: 11,129.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,625.56 : 18,915.66 = 7,428.60 : x
  2. Step 2: Convert to fraction form
    12,625.56/18,915.66 = 7,428.60/x
  3. Step 3: Cross multiply
    12,625.56x = 18,915.66 × 7,428.60
  4. Step 4: Simplify right side
    12,625.56x = 140,516,871.88
  5. Step 5: Solve for x
    x = 140,516,871.88/12,625.56
  6. Step 6: Final answer
    x = 11,129.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.