Home / 12,172.32-18,258.48-2,938.32

Finding the Fourth Proportional to 12,172.32, 18,258.48 and 2,938.32

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Solution

The fourth proportional to 12,172.32, 18,258.48 and 2,938.32 is: 4,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.32 : 18,258.48 = 2,938.32 : x
  2. Step 2: Convert to fraction form
    12,172.32/18,258.48 = 2,938.32/x
  3. Step 3: Cross multiply
    12,172.32x = 18,258.48 × 2,938.32
  4. Step 4: Simplify right side
    12,172.32x = 53,649,256.95
  5. Step 5: Solve for x
    x = 53,649,256.95/12,172.32
  6. Step 6: Final answer
    x = 4,407.48

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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.