Home / 12,690.21-19,036.26-3,925.08

Finding the Fourth Proportional to 12,690.21, 19,036.26 and 3,925.08

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Solution

The fourth proportional to 12,690.21, 19,036.26 and 3,925.08 is: 5,887.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.21 : 19,036.26 = 3,925.08 : x
  2. Step 2: Convert to fraction form
    12,690.21/19,036.26 = 3,925.08/x
  3. Step 3: Cross multiply
    12,690.21x = 19,036.26 × 3,925.08
  4. Step 4: Simplify right side
    12,690.21x = 74,718,843.40
  5. Step 5: Solve for x
    x = 74,718,843.40/12,690.21
  6. Step 6: Final answer
    x = 5,887.91

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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.