Home / 19,431.45-26,800.07-13,057.29

Finding the Fourth Proportional to 19,431.45, 26,800.07 and 13,057.29

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Solution

The fourth proportional to 19,431.45, 26,800.07 and 13,057.29 is: 18,008.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.45 : 26,800.07 = 13,057.29 : x
  2. Step 2: Convert to fraction form
    19,431.45/26,800.07 = 13,057.29/x
  3. Step 3: Cross multiply
    19,431.45x = 26,800.07 × 13,057.29
  4. Step 4: Simplify right side
    19,431.45x = 349,936,220.72
  5. Step 5: Solve for x
    x = 349,936,220.72/19,431.45
  6. Step 6: Final answer
    x = 18,008.75

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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.