Home / 13,519,579.20-18,657,019.20-7,407,876.48

Finding the Fourth Proportional to 13,519,579.20, 18,657,019.20 and 7,407,876.48

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Solution

The fourth proportional to 13,519,579.20, 18,657,019.20 and 7,407,876.48 is: 10,222,869.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519,579.20 : 18,657,019.20 = 7,407,876.48 : x
  2. Step 2: Convert to fraction form
    13,519,579.20/18,657,019.20 = 7,407,876.48/x
  3. Step 3: Cross multiply
    13,519,579.20x = 18,657,019.20 × 7,407,876.48
  4. Step 4: Simplify right side
    13,519,579.20x = 138,208,893,718,588.42
  5. Step 5: Solve for x
    x = 138,208,893,718,588.42/13,519,579.20
  6. Step 6: Final answer
    x = 10,222,869.49

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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.