Home / 14,789.89-20,409.47-8,075.80

Finding the Fourth Proportional to 14,789.89, 20,409.47 and 8,075.80

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Solution

The fourth proportional to 14,789.89, 20,409.47 and 8,075.80 is: 11,144.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,789.89 : 20,409.47 = 8,075.80 : x
  2. Step 2: Convert to fraction form
    14,789.89/20,409.47 = 8,075.80/x
  3. Step 3: Cross multiply
    14,789.89x = 20,409.47 × 8,075.80
  4. Step 4: Simplify right side
    14,789.89x = 164,822,757.45
  5. Step 5: Solve for x
    x = 164,822,757.45/14,789.89
  6. Step 6: Final answer
    x = 11,144.29

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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.