Home / 19,215.13-28,825.67-8,121.86

Finding the Fourth Proportional to 19,215.13, 28,825.67 and 8,121.86

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Solution

The fourth proportional to 19,215.13, 28,825.67 and 8,121.86 is: 12,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.13 : 28,825.67 = 8,121.86 : x
  2. Step 2: Convert to fraction form
    19,215.13/28,825.67 = 8,121.86/x
  3. Step 3: Cross multiply
    19,215.13x = 28,825.67 × 8,121.86
  4. Step 4: Simplify right side
    19,215.13x = 234,118,056.15
  5. Step 5: Solve for x
    x = 234,118,056.15/19,215.13
  6. Step 6: Final answer
    x = 12,184.05

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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.