Home / 20,391.95-30,567.27-13,818.80

Finding the Fourth Proportional to 20,391.95, 30,567.27 and 13,818.80

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Solution

The fourth proportional to 20,391.95, 30,567.27 and 13,818.80 is: 20,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.95 : 30,567.27 = 13,818.80 : x
  2. Step 2: Convert to fraction form
    20,391.95/30,567.27 = 13,818.80/x
  3. Step 3: Cross multiply
    20,391.95x = 30,567.27 × 13,818.80
  4. Step 4: Simplify right side
    20,391.95x = 422,402,990.68
  5. Step 5: Solve for x
    x = 422,402,990.68/20,391.95
  6. Step 6: Final answer
    x = 20,714.20

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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.