Home / 15,781,131.28-21,694,360.74-13,567,840.16

Finding the Fourth Proportional to 15,781,131.28, 21,694,360.74 and 13,567,840.16

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Solution

The fourth proportional to 15,781,131.28, 21,694,360.74 and 13,567,840.16 is: 18,651,743.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781,131.28 : 21,694,360.74 = 13,567,840.16 : x
  2. Step 2: Convert to fraction form
    15,781,131.28/21,694,360.74 = 13,567,840.16/x
  3. Step 3: Cross multiply
    15,781,131.28x = 21,694,360.74 × 13,567,840.16
  4. Step 4: Simplify right side
    15,781,131.28x = 294,345,618,893,699.31
  5. Step 5: Solve for x
    x = 294,345,618,893,699.31/15,781,131.28
  6. Step 6: Final answer
    x = 18,651,743.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.