Home / 21,457,504.32-29,689,331.75-18,709,917.23

Finding the Fourth Proportional to 21,457,504.32, 29,689,331.75 and 18,709,917.23

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Solution

The fourth proportional to 21,457,504.32, 29,689,331.75 and 18,709,917.23 is: 25,887,676.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457,504.32 : 29,689,331.75 = 18,709,917.23 : x
  2. Step 2: Convert to fraction form
    21,457,504.32/29,689,331.75 = 18,709,917.23/x
  3. Step 3: Cross multiply
    21,457,504.32x = 29,689,331.75 × 18,709,917.23
  4. Step 4: Simplify right side
    21,457,504.32x = 555,484,939,414,514.88
  5. Step 5: Solve for x
    x = 555,484,939,414,514.88/21,457,504.32
  6. Step 6: Final answer
    x = 25,887,676.92

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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.