Home / 21,139,916.44-29,172,588.48-12,438,652.64

Finding the Fourth Proportional to 21,139,916.44, 29,172,588.48 and 12,438,652.64

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Solution

The fourth proportional to 21,139,916.44, 29,172,588.48 and 12,438,652.64 is: 17,165,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,916.44 : 29,172,588.48 = 12,438,652.64 : x
  2. Step 2: Convert to fraction form
    21,139,916.44/29,172,588.48 = 12,438,652.64/x
  3. Step 3: Cross multiply
    21,139,916.44x = 29,172,588.48 × 12,438,652.64
  4. Step 4: Simplify right side
    21,139,916.44x = 362,867,694,712,385.62
  5. Step 5: Solve for x
    x = 362,867,694,712,385.62/21,139,916.44
  6. Step 6: Final answer
    x = 17,165,048.68

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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.