Home / 17,979.12-26,965.44-12,763.80

Finding the Fourth Proportional to 17,979.12, 26,965.44 and 12,763.80

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Solution

The fourth proportional to 17,979.12, 26,965.44 and 12,763.80 is: 19,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,979.12 : 26,965.44 = 12,763.80 : x
  2. Step 2: Convert to fraction form
    17,979.12/26,965.44 = 12,763.80/x
  3. Step 3: Cross multiply
    17,979.12x = 26,965.44 × 12,763.80
  4. Step 4: Simplify right side
    17,979.12x = 344,181,483.07
  5. Step 5: Solve for x
    x = 344,181,483.07/17,979.12
  6. Step 6: Final answer
    x = 19,143.40

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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.