Home / 21,809.79-32,693.36-11,291.72

Finding the Fourth Proportional to 21,809.79, 32,693.36 and 11,291.72

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Solution

The fourth proportional to 21,809.79, 32,693.36 and 11,291.72 is: 16,926.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.79 : 32,693.36 = 11,291.72 : x
  2. Step 2: Convert to fraction form
    21,809.79/32,693.36 = 11,291.72/x
  3. Step 3: Cross multiply
    21,809.79x = 32,693.36 × 11,291.72
  4. Step 4: Simplify right side
    21,809.79x = 369,164,047.05
  5. Step 5: Solve for x
    x = 369,164,047.05/21,809.79
  6. Step 6: Final answer
    x = 16,926.53

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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.