Home / 28,401.75-42,608.10-12,819.39

Finding the Fourth Proportional to 28,401.75, 42,608.10 and 12,819.39

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Solution

The fourth proportional to 28,401.75, 42,608.10 and 12,819.39 is: 19,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.75 : 42,608.10 = 12,819.39 : x
  2. Step 2: Convert to fraction form
    28,401.75/42,608.10 = 12,819.39/x
  3. Step 3: Cross multiply
    28,401.75x = 42,608.10 × 12,819.39
  4. Step 4: Simplify right side
    28,401.75x = 546,209,851.06
  5. Step 5: Solve for x
    x = 546,209,851.06/28,401.75
  6. Step 6: Final answer
    x = 19,231.56

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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.