Home / 20,308.21-30,430.89-14,080.39

Finding the Fourth Proportional to 20,308.21, 30,430.89 and 14,080.39

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Solution

The fourth proportional to 20,308.21, 30,430.89 and 14,080.39 is: 21,098.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.21 : 30,430.89 = 14,080.39 : x
  2. Step 2: Convert to fraction form
    20,308.21/30,430.89 = 14,080.39/x
  3. Step 3: Cross multiply
    20,308.21x = 30,430.89 × 14,080.39
  4. Step 4: Simplify right side
    20,308.21x = 428,478,647.09
  5. Step 5: Solve for x
    x = 428,478,647.09/20,308.21
  6. Step 6: Final answer
    x = 21,098.79

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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.