Home / 19,419.70-26,788.36-13,454.86

Finding the Fourth Proportional to 19,419.70, 26,788.36 and 13,454.86

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Solution

The fourth proportional to 19,419.70, 26,788.36 and 13,454.86 is: 18,560.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.70 : 26,788.36 = 13,454.86 : x
  2. Step 2: Convert to fraction form
    19,419.70/26,788.36 = 13,454.86/x
  3. Step 3: Cross multiply
    19,419.70x = 26,788.36 × 13,454.86
  4. Step 4: Simplify right side
    19,419.70x = 360,433,633.43
  5. Step 5: Solve for x
    x = 360,433,633.43/19,419.70
  6. Step 6: Final answer
    x = 18,560.21

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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.