Home / 20,848.76-28,770.76-11,650.39

Finding the Fourth Proportional to 20,848.76, 28,770.76 and 11,650.39

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Solution

The fourth proportional to 20,848.76, 28,770.76 and 11,650.39 is: 16,077.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.76 : 28,770.76 = 11,650.39 : x
  2. Step 2: Convert to fraction form
    20,848.76/28,770.76 = 11,650.39/x
  3. Step 3: Cross multiply
    20,848.76x = 28,770.76 × 11,650.39
  4. Step 4: Simplify right side
    20,848.76x = 335,190,574.60
  5. Step 5: Solve for x
    x = 335,190,574.60/20,848.76
  6. Step 6: Final answer
    x = 16,077.24

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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.