Home / 21,078,650.73-29,077,317.27-12,821,238.57

Finding the Fourth Proportional to 21,078,650.73, 29,077,317.27 and 12,821,238.57

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Solution

The fourth proportional to 21,078,650.73, 29,077,317.27 and 12,821,238.57 is: 17,686,484.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078,650.73 : 29,077,317.27 = 12,821,238.57 : x
  2. Step 2: Convert to fraction form
    21,078,650.73/29,077,317.27 = 12,821,238.57/x
  3. Step 3: Cross multiply
    21,078,650.73x = 29,077,317.27 × 12,821,238.57
  4. Step 4: Simplify right side
    21,078,650.73x = 372,807,221,694,251.12
  5. Step 5: Solve for x
    x = 372,807,221,694,251.12/21,078,650.73
  6. Step 6: Final answer
    x = 17,686,484.13

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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.