Home / 21,216,734.19-29,286,261.59-13,784,564.61

Finding the Fourth Proportional to 21,216,734.19, 29,286,261.59 and 13,784,564.61

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Solution

The fourth proportional to 21,216,734.19, 29,286,261.59 and 13,784,564.61 is: 19,027,356.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216,734.19 : 29,286,261.59 = 13,784,564.61 : x
  2. Step 2: Convert to fraction form
    21,216,734.19/29,286,261.59 = 13,784,564.61/x
  3. Step 3: Cross multiply
    21,216,734.19x = 29,286,261.59 × 13,784,564.61
  4. Step 4: Simplify right side
    21,216,734.19x = 403,698,365,003,793.50
  5. Step 5: Solve for x
    x = 403,698,365,003,793.50/21,216,734.19
  6. Step 6: Final answer
    x = 19,027,356.49

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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.