Home / 20,312,546.96-28,031,830.56-11,145,187.28

Finding the Fourth Proportional to 20,312,546.96, 28,031,830.56 and 11,145,187.28

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Solution

The fourth proportional to 20,312,546.96, 28,031,830.56 and 11,145,187.28 is: 15,380,641.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312,546.96 : 28,031,830.56 = 11,145,187.28 : x
  2. Step 2: Convert to fraction form
    20,312,546.96/28,031,830.56 = 11,145,187.28/x
  3. Step 3: Cross multiply
    20,312,546.96x = 28,031,830.56 × 11,145,187.28
  4. Step 4: Simplify right side
    20,312,546.96x = 312,420,001,392,427.25
  5. Step 5: Solve for x
    x = 312,420,001,392,427.25/20,312,546.96
  6. Step 6: Final answer
    x = 15,380,641.43

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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.