Home / 21,457,504.20-29,689,331.57-18,709,917.10

Finding the Fourth Proportional to 21,457,504.20, 29,689,331.57 and 18,709,917.10

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Solution

The fourth proportional to 21,457,504.20, 29,689,331.57 and 18,709,917.10 is: 25,887,676.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457,504.20 : 29,689,331.57 = 18,709,917.10 : x
  2. Step 2: Convert to fraction form
    21,457,504.20/29,689,331.57 = 18,709,917.10/x
  3. Step 3: Cross multiply
    21,457,504.20x = 29,689,331.57 × 18,709,917.10
  4. Step 4: Simplify right side
    21,457,504.20x = 555,484,932,429,112.88
  5. Step 5: Solve for x
    x = 555,484,932,429,112.88/21,457,504.20
  6. Step 6: Final answer
    x = 25,887,676.74

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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.