Home / 21,181,917.69-29,139,318.63-18,556,599.15

Finding the Fourth Proportional to 21,181,917.69, 29,139,318.63 and 18,556,599.15

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Solution

The fourth proportional to 21,181,917.69, 29,139,318.63 and 18,556,599.15 is: 25,527,747.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181,917.69 : 29,139,318.63 = 18,556,599.15 : x
  2. Step 2: Convert to fraction form
    21,181,917.69/29,139,318.63 = 18,556,599.15/x
  3. Step 3: Cross multiply
    21,181,917.69x = 29,139,318.63 × 18,556,599.15
  4. Step 4: Simplify right side
    21,181,917.69x = 540,726,655,321,037.12
  5. Step 5: Solve for x
    x = 540,726,655,321,037.12/21,181,917.69
  6. Step 6: Final answer
    x = 25,527,747.92

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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.