Home / 21,803.90-32,656.91-18,956.12

Finding the Fourth Proportional to 21,803.90, 32,656.91 and 18,956.12

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Solution

The fourth proportional to 21,803.90, 32,656.91 and 18,956.12 is: 28,391.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.90 : 32,656.91 = 18,956.12 : x
  2. Step 2: Convert to fraction form
    21,803.90/32,656.91 = 18,956.12/x
  3. Step 3: Cross multiply
    21,803.90x = 32,656.91 × 18,956.12
  4. Step 4: Simplify right side
    21,803.90x = 619,048,046.72
  5. Step 5: Solve for x
    x = 619,048,046.72/21,803.90
  6. Step 6: Final answer
    x = 28,391.63

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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.