Home / 20,436.89-28,203.74-11,484.37

Finding the Fourth Proportional to 20,436.89, 28,203.74 and 11,484.37

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Solution

The fourth proportional to 20,436.89, 28,203.74 and 11,484.37 is: 15,848.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.89 : 28,203.74 = 11,484.37 : x
  2. Step 2: Convert to fraction form
    20,436.89/28,203.74 = 11,484.37/x
  3. Step 3: Cross multiply
    20,436.89x = 28,203.74 × 11,484.37
  4. Step 4: Simplify right side
    20,436.89x = 323,901,987.10
  5. Step 5: Solve for x
    x = 323,901,987.10/20,436.89
  6. Step 6: Final answer
    x = 15,848.89

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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.