Home / 12,900.21-19,348.38-4,133.94

Finding the Fourth Proportional to 12,900.21, 19,348.38 and 4,133.94

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Solution

The fourth proportional to 12,900.21, 19,348.38 and 4,133.94 is: 6,200.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.21 : 19,348.38 = 4,133.94 : x
  2. Step 2: Convert to fraction form
    12,900.21/19,348.38 = 4,133.94/x
  3. Step 3: Cross multiply
    12,900.21x = 19,348.38 × 4,133.94
  4. Step 4: Simplify right side
    12,900.21x = 79,985,042.02
  5. Step 5: Solve for x
    x = 79,985,042.02/12,900.21
  6. Step 6: Final answer
    x = 6,200.29

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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.