Home / 21,758.44-30,019.26-12,803.08

Finding the Fourth Proportional to 21,758.44, 30,019.26 and 12,803.08

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Solution

The fourth proportional to 21,758.44, 30,019.26 and 12,803.08 is: 17,663.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,758.44 : 30,019.26 = 12,803.08 : x
  2. Step 2: Convert to fraction form
    21,758.44/30,019.26 = 12,803.08/x
  3. Step 3: Cross multiply
    21,758.44x = 30,019.26 × 12,803.08
  4. Step 4: Simplify right side
    21,758.44x = 384,338,987.32
  5. Step 5: Solve for x
    x = 384,338,987.32/21,758.44
  6. Step 6: Final answer
    x = 17,663.90

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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.