Home / 18,728.96-28,075.84-6,408.32

Finding the Fourth Proportional to 18,728.96, 28,075.84 and 6,408.32

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Solution

The fourth proportional to 18,728.96, 28,075.84 and 6,408.32 is: 9,606.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.96 : 28,075.84 = 6,408.32 : x
  2. Step 2: Convert to fraction form
    18,728.96/28,075.84 = 6,408.32/x
  3. Step 3: Cross multiply
    18,728.96x = 28,075.84 × 6,408.32
  4. Step 4: Simplify right side
    18,728.96x = 179,918,966.99
  5. Step 5: Solve for x
    x = 179,918,966.99/18,728.96
  6. Step 6: Final answer
    x = 9,606.46

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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.