Home / 21,983.75-32,920.92-15,379.01

Finding the Fourth Proportional to 21,983.75, 32,920.92 and 15,379.01

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Solution

The fourth proportional to 21,983.75, 32,920.92 and 15,379.01 is: 23,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.75 : 32,920.92 = 15,379.01 : x
  2. Step 2: Convert to fraction form
    21,983.75/32,920.92 = 15,379.01/x
  3. Step 3: Cross multiply
    21,983.75x = 32,920.92 × 15,379.01
  4. Step 4: Simplify right side
    21,983.75x = 506,291,157.89
  5. Step 5: Solve for x
    x = 506,291,157.89/21,983.75
  6. Step 6: Final answer
    x = 23,030.25

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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.