Home / 20,075.63-27,705.09-12,116.30

Finding the Fourth Proportional to 20,075.63, 27,705.09 and 12,116.30

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Solution

The fourth proportional to 20,075.63, 27,705.09 and 12,116.30 is: 16,720.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.63 : 27,705.09 = 12,116.30 : x
  2. Step 2: Convert to fraction form
    20,075.63/27,705.09 = 12,116.30/x
  3. Step 3: Cross multiply
    20,075.63x = 27,705.09 × 12,116.30
  4. Step 4: Simplify right side
    20,075.63x = 335,683,043.44
  5. Step 5: Solve for x
    x = 335,683,043.44/20,075.63
  6. Step 6: Final answer
    x = 16,720.93

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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.