Home / 20,308.26-28,023.66-11,810.55

Finding the Fourth Proportional to 20,308.26, 28,023.66 and 11,810.55

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Solution

The fourth proportional to 20,308.26, 28,023.66 and 11,810.55 is: 16,297.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.26 : 28,023.66 = 11,810.55 : x
  2. Step 2: Convert to fraction form
    20,308.26/28,023.66 = 11,810.55/x
  3. Step 3: Cross multiply
    20,308.26x = 28,023.66 × 11,810.55
  4. Step 4: Simplify right side
    20,308.26x = 330,974,837.61
  5. Step 5: Solve for x
    x = 330,974,837.61/20,308.26
  6. Step 6: Final answer
    x = 16,297.55

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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.