Home / 21,879.42-30,214.30-17,435.86

Finding the Fourth Proportional to 21,879.42, 30,214.30 and 17,435.86

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Solution

The fourth proportional to 21,879.42, 30,214.30 and 17,435.86 is: 24,077.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879.42 : 30,214.30 = 17,435.86 : x
  2. Step 2: Convert to fraction form
    21,879.42/30,214.30 = 17,435.86/x
  3. Step 3: Cross multiply
    21,879.42x = 30,214.30 × 17,435.86
  4. Step 4: Simplify right side
    21,879.42x = 526,812,304.80
  5. Step 5: Solve for x
    x = 526,812,304.80/21,879.42
  6. Step 6: Final answer
    x = 24,077.98

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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.