Home / 30,211.65-41,693.27-20,671.55

Finding the Fourth Proportional to 30,211.65, 41,693.27 and 20,671.55

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Solution

The fourth proportional to 30,211.65, 41,693.27 and 20,671.55 is: 28,527.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.65 : 41,693.27 = 20,671.55 : x
  2. Step 2: Convert to fraction form
    30,211.65/41,693.27 = 20,671.55/x
  3. Step 3: Cross multiply
    30,211.65x = 41,693.27 × 20,671.55
  4. Step 4: Simplify right side
    30,211.65x = 861,864,418.63
  5. Step 5: Solve for x
    x = 861,864,418.63/30,211.65
  6. Step 6: Final answer
    x = 28,527.55

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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.