Home / 21,366,042.82-29,468,869.83-18,390,809.54

Finding the Fourth Proportional to 21,366,042.82, 29,468,869.83 and 18,390,809.54

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Solution

The fourth proportional to 21,366,042.82, 29,468,869.83 and 18,390,809.54 is: 25,365,313.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366,042.82 : 29,468,869.83 = 18,390,809.54 : x
  2. Step 2: Convert to fraction form
    21,366,042.82/29,468,869.83 = 18,390,809.54/x
  3. Step 3: Cross multiply
    21,366,042.82x = 29,468,869.83 × 18,390,809.54
  4. Step 4: Simplify right side
    21,366,042.82x = 541,956,372,476,254.31
  5. Step 5: Solve for x
    x = 541,956,372,476,254.31/21,366,042.82
  6. Step 6: Final answer
    x = 25,365,313.41

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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.