Home / 19,428.96-26,820.09-13,144.98

Finding the Fourth Proportional to 19,428.96, 26,820.09 and 13,144.98

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Solution

The fourth proportional to 19,428.96, 26,820.09 and 13,144.98 is: 18,145.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.96 : 26,820.09 = 13,144.98 : x
  2. Step 2: Convert to fraction form
    19,428.96/26,820.09 = 13,144.98/x
  3. Step 3: Cross multiply
    19,428.96x = 26,820.09 × 13,144.98
  4. Step 4: Simplify right side
    19,428.96x = 352,549,546.65
  5. Step 5: Solve for x
    x = 352,549,546.65/19,428.96
  6. Step 6: Final answer
    x = 18,145.57

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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.