Home / 21,720.89-32,581.30-7,673.29

Finding the Fourth Proportional to 21,720.89, 32,581.30 and 7,673.29

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Solution

The fourth proportional to 21,720.89, 32,581.30 and 7,673.29 is: 11,509.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.89 : 32,581.30 = 7,673.29 : x
  2. Step 2: Convert to fraction form
    21,720.89/32,581.30 = 7,673.29/x
  3. Step 3: Cross multiply
    21,720.89x = 32,581.30 × 7,673.29
  4. Step 4: Simplify right side
    21,720.89x = 250,005,763.48
  5. Step 5: Solve for x
    x = 250,005,763.48/21,720.89
  6. Step 6: Final answer
    x = 11,509.92

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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.