Home / 11,075.70-15,286.96-7,041.75

Finding the Fourth Proportional to 11,075.70, 15,286.96 and 7,041.75

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Solution

The fourth proportional to 11,075.70, 15,286.96 and 7,041.75 is: 9,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,075.70 : 15,286.96 = 7,041.75 : x
  2. Step 2: Convert to fraction form
    11,075.70/15,286.96 = 7,041.75/x
  3. Step 3: Cross multiply
    11,075.70x = 15,286.96 × 7,041.75
  4. Step 4: Simplify right side
    11,075.70x = 107,646,988.05
  5. Step 5: Solve for x
    x = 107,646,988.05/11,075.70
  6. Step 6: Final answer
    x = 9,719.20

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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.