Home / 20,075.18-27,705.44-11,125.49

Finding the Fourth Proportional to 20,075.18, 27,705.44 and 11,125.49

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Solution

The fourth proportional to 20,075.18, 27,705.44 and 11,125.49 is: 15,354.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.18 : 27,705.44 = 11,125.49 : x
  2. Step 2: Convert to fraction form
    20,075.18/27,705.44 = 11,125.49/x
  3. Step 3: Cross multiply
    20,075.18x = 27,705.44 × 11,125.49
  4. Step 4: Simplify right side
    20,075.18x = 308,236,484.95
  5. Step 5: Solve for x
    x = 308,236,484.95/20,075.18
  6. Step 6: Final answer
    x = 15,354.11

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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.