Home / 51,478.04-77,217.82-20,313

Finding the Fourth Proportional to 51,478.04, 77,217.82 and 20,313

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Solution

The fourth proportional to 51,478.04, 77,217.82 and 20,313 is: 30,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,478.04 : 77,217.82 = 20,313 : x
  2. Step 2: Convert to fraction form
    51,478.04/77,217.82 = 20,313/x
  3. Step 3: Cross multiply
    51,478.04x = 77,217.82 × 20,313
  4. Step 4: Simplify right side
    51,478.04x = 1,568,525,577.66
  5. Step 5: Solve for x
    x = 1,568,525,577.66/51,478.04
  6. Step 6: Final answer
    x = 30,469.80

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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.