Home / 20,841.12-28,762.26-11,888.82

Finding the Fourth Proportional to 20,841.12, 28,762.26 and 11,888.82

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Solution

The fourth proportional to 20,841.12, 28,762.26 and 11,888.82 is: 16,407.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.12 : 28,762.26 = 11,888.82 : x
  2. Step 2: Convert to fraction form
    20,841.12/28,762.26 = 11,888.82/x
  3. Step 3: Cross multiply
    20,841.12x = 28,762.26 × 11,888.82
  4. Step 4: Simplify right side
    20,841.12x = 341,949,331.93
  5. Step 5: Solve for x
    x = 341,949,331.93/20,841.12
  6. Step 6: Final answer
    x = 16,407.44

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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.