Home / 34,720.88-47,911.80-20,571.44

Finding the Fourth Proportional to 34,720.88, 47,911.80 and 20,571.44

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Solution

The fourth proportional to 34,720.88, 47,911.80 and 20,571.44 is: 28,386.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,720.88 : 47,911.80 = 20,571.44 : x
  2. Step 2: Convert to fraction form
    34,720.88/47,911.80 = 20,571.44/x
  3. Step 3: Cross multiply
    34,720.88x = 47,911.80 × 20,571.44
  4. Step 4: Simplify right side
    34,720.88x = 985,614,718.99
  5. Step 5: Solve for x
    x = 985,614,718.99/34,720.88
  6. Step 6: Final answer
    x = 28,386.80

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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.