Home / 12,965.58-19,449.39-6,388.18

Finding the Fourth Proportional to 12,965.58, 19,449.39 and 6,388.18

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Solution

The fourth proportional to 12,965.58, 19,449.39 and 6,388.18 is: 9,582.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965.58 : 19,449.39 = 6,388.18 : x
  2. Step 2: Convert to fraction form
    12,965.58/19,449.39 = 6,388.18/x
  3. Step 3: Cross multiply
    12,965.58x = 19,449.39 × 6,388.18
  4. Step 4: Simplify right side
    12,965.58x = 124,246,075.02
  5. Step 5: Solve for x
    x = 124,246,075.02/12,965.58
  6. Step 6: Final answer
    x = 9,582.77

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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.