Home / 19,381.15-26,749.47-11,422.90

Finding the Fourth Proportional to 19,381.15, 26,749.47 and 11,422.90

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Solution

The fourth proportional to 19,381.15, 26,749.47 and 11,422.90 is: 15,765.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,381.15 : 26,749.47 = 11,422.90 : x
  2. Step 2: Convert to fraction form
    19,381.15/26,749.47 = 11,422.90/x
  3. Step 3: Cross multiply
    19,381.15x = 26,749.47 × 11,422.90
  4. Step 4: Simplify right side
    19,381.15x = 305,556,520.86
  5. Step 5: Solve for x
    x = 305,556,520.86/19,381.15
  6. Step 6: Final answer
    x = 15,765.65

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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.