Home / 21,012,682.08-29,002,009.86-13,272,801.60

Finding the Fourth Proportional to 21,012,682.08, 29,002,009.86 and 13,272,801.60

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Solution

The fourth proportional to 21,012,682.08, 29,002,009.86 and 13,272,801.60 is: 18,319,314.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012,682.08 : 29,002,009.86 = 13,272,801.60 : x
  2. Step 2: Convert to fraction form
    21,012,682.08/29,002,009.86 = 13,272,801.60/x
  3. Step 3: Cross multiply
    21,012,682.08x = 29,002,009.86 × 13,272,801.60
  4. Step 4: Simplify right side
    21,012,682.08x = 384,937,922,873,023.75
  5. Step 5: Solve for x
    x = 384,937,922,873,023.75/21,012,682.08
  6. Step 6: Final answer
    x = 18,319,314.09

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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.