Home / 28,168.33-38,872.15-15,422.67

Finding the Fourth Proportional to 28,168.33, 38,872.15 and 15,422.67

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Solution

The fourth proportional to 28,168.33, 38,872.15 and 15,422.67 is: 21,283.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.33 : 38,872.15 = 15,422.67 : x
  2. Step 2: Convert to fraction form
    28,168.33/38,872.15 = 15,422.67/x
  3. Step 3: Cross multiply
    28,168.33x = 38,872.15 × 15,422.67
  4. Step 4: Simplify right side
    28,168.33x = 599,512,341.64
  5. Step 5: Solve for x
    x = 599,512,341.64/28,168.33
  6. Step 6: Final answer
    x = 21,283.20

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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.