Home / 21,828.60-32,660.46-13,365

Finding the Fourth Proportional to 21,828.60, 32,660.46 and 13,365

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Solution

The fourth proportional to 21,828.60, 32,660.46 and 13,365 is: 19,997.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.60 : 32,660.46 = 13,365 : x
  2. Step 2: Convert to fraction form
    21,828.60/32,660.46 = 13,365/x
  3. Step 3: Cross multiply
    21,828.60x = 32,660.46 × 13,365
  4. Step 4: Simplify right side
    21,828.60x = 436,507,047.90
  5. Step 5: Solve for x
    x = 436,507,047.90/21,828.60
  6. Step 6: Final answer
    x = 19,997.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.