Home / 34,278.21-47,307.42-20,850.39

Finding the Fourth Proportional to 34,278.21, 47,307.42 and 20,850.39

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Solution

The fourth proportional to 34,278.21, 47,307.42 and 20,850.39 is: 28,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,278.21 : 47,307.42 = 20,850.39 : x
  2. Step 2: Convert to fraction form
    34,278.21/47,307.42 = 20,850.39/x
  3. Step 3: Cross multiply
    34,278.21x = 47,307.42 × 20,850.39
  4. Step 4: Simplify right side
    34,278.21x = 986,378,156.89
  5. Step 5: Solve for x
    x = 986,378,156.89/34,278.21
  6. Step 6: Final answer
    x = 28,775.66

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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.