Home / 20,391.34-30,566.32-13,818.18

Finding the Fourth Proportional to 20,391.34, 30,566.32 and 13,818.18

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Solution

The fourth proportional to 20,391.34, 30,566.32 and 13,818.18 is: 20,713.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.34 : 30,566.32 = 13,818.18 : x
  2. Step 2: Convert to fraction form
    20,391.34/30,566.32 = 13,818.18/x
  3. Step 3: Cross multiply
    20,391.34x = 30,566.32 × 13,818.18
  4. Step 4: Simplify right side
    20,391.34x = 422,370,911.70
  5. Step 5: Solve for x
    x = 422,370,911.70/20,391.34
  6. Step 6: Final answer
    x = 20,713.25

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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.