Home / 13,519,581.20-18,657,021.96-7,407,878.48

Finding the Fourth Proportional to 13,519,581.20, 18,657,021.96 and 7,407,878.48

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Solution

The fourth proportional to 13,519,581.20, 18,657,021.96 and 7,407,878.48 is: 10,222,872.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519,581.20 : 18,657,021.96 = 7,407,878.48 : x
  2. Step 2: Convert to fraction form
    13,519,581.20/18,657,021.96 = 7,407,878.48/x
  3. Step 3: Cross multiply
    13,519,581.20x = 18,657,021.96 × 7,407,878.48
  4. Step 4: Simplify right side
    13,519,581.20x = 138,208,951,385,086.31
  5. Step 5: Solve for x
    x = 138,208,951,385,086.31/13,519,581.20
  6. Step 6: Final answer
    x = 10,222,872.25

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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.