Home / 20,306.86-30,460.29-13,379.74

Finding the Fourth Proportional to 20,306.86, 30,460.29 and 13,379.74

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Solution

The fourth proportional to 20,306.86, 30,460.29 and 13,379.74 is: 20,069.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.86 : 30,460.29 = 13,379.74 : x
  2. Step 2: Convert to fraction form
    20,306.86/30,460.29 = 13,379.74/x
  3. Step 3: Cross multiply
    20,306.86x = 30,460.29 × 13,379.74
  4. Step 4: Simplify right side
    20,306.86x = 407,550,760.52
  5. Step 5: Solve for x
    x = 407,550,760.52/20,306.86
  6. Step 6: Final answer
    x = 20,069.61

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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.