Home / 21,539.01-29,719.47-12,584.79

Finding the Fourth Proportional to 21,539.01, 29,719.47 and 12,584.79

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Solution

The fourth proportional to 21,539.01, 29,719.47 and 12,584.79 is: 17,364.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.01 : 29,719.47 = 12,584.79 : x
  2. Step 2: Convert to fraction form
    21,539.01/29,719.47 = 12,584.79/x
  3. Step 3: Cross multiply
    21,539.01x = 29,719.47 × 12,584.79
  4. Step 4: Simplify right side
    21,539.01x = 374,013,288.86
  5. Step 5: Solve for x
    x = 374,013,288.86/21,539.01
  6. Step 6: Final answer
    x = 17,364.46

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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.