Home / 20,992.26-31,446.21-10,430.35

Finding the Fourth Proportional to 20,992.26, 31,446.21 and 10,430.35

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Solution

The fourth proportional to 20,992.26, 31,446.21 and 10,430.35 is: 15,624.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.26 : 31,446.21 = 10,430.35 : x
  2. Step 2: Convert to fraction form
    20,992.26/31,446.21 = 10,430.35/x
  3. Step 3: Cross multiply
    20,992.26x = 31,446.21 × 10,430.35
  4. Step 4: Simplify right side
    20,992.26x = 327,994,976.47
  5. Step 5: Solve for x
    x = 327,994,976.47/20,992.26
  6. Step 6: Final answer
    x = 15,624.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.