Home / 34,122.80-51,216.60-21,000.80

Finding the Fourth Proportional to 34,122.80, 51,216.60 and 21,000.80

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Solution

The fourth proportional to 34,122.80, 51,216.60 and 21,000.80 is: 31,521.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,122.80 : 51,216.60 = 21,000.80 : x
  2. Step 2: Convert to fraction form
    34,122.80/51,216.60 = 21,000.80/x
  3. Step 3: Cross multiply
    34,122.80x = 51,216.60 × 21,000.80
  4. Step 4: Simplify right side
    34,122.80x = 1,075,589,573.28
  5. Step 5: Solve for x
    x = 1,075,589,573.28/34,122.80
  6. Step 6: Final answer
    x = 31,521.14

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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.