Home / 21,242,871.48-29,310,766.38-12,420,625.08

Finding the Fourth Proportional to 21,242,871.48, 29,310,766.38 and 12,420,625.08

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Solution

The fourth proportional to 21,242,871.48, 29,310,766.38 and 12,420,625.08 is: 17,137,892.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242,871.48 : 29,310,766.38 = 12,420,625.08 : x
  2. Step 2: Convert to fraction form
    21,242,871.48/29,310,766.38 = 12,420,625.08/x
  3. Step 3: Cross multiply
    21,242,871.48x = 29,310,766.38 × 12,420,625.08
  4. Step 4: Simplify right side
    21,242,871.48x = 364,058,040,013,448.81
  5. Step 5: Solve for x
    x = 364,058,040,013,448.81/21,242,871.48
  6. Step 6: Final answer
    x = 17,137,892.13

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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.