Home / 9,479.99-13,075.61-8,218.79

Finding the Fourth Proportional to 9,479.99, 13,075.61 and 8,218.79

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Solution

The fourth proportional to 9,479.99, 13,075.61 and 8,218.79 is: 11,336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,479.99 : 13,075.61 = 8,218.79 : x
  2. Step 2: Convert to fraction form
    9,479.99/13,075.61 = 8,218.79/x
  3. Step 3: Cross multiply
    9,479.99x = 13,075.61 × 8,218.79
  4. Step 4: Simplify right side
    9,479.99x = 107,465,692.71
  5. Step 5: Solve for x
    x = 107,465,692.71/9,479.99
  6. Step 6: Final answer
    x = 11,336.06

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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.