Home / 21,341.58-31,986.45-15,103.43

Finding the Fourth Proportional to 21,341.58, 31,986.45 and 15,103.43

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Solution

The fourth proportional to 21,341.58, 31,986.45 and 15,103.43 is: 22,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.58 : 31,986.45 = 15,103.43 : x
  2. Step 2: Convert to fraction form
    21,341.58/31,986.45 = 15,103.43/x
  3. Step 3: Cross multiply
    21,341.58x = 31,986.45 × 15,103.43
  4. Step 4: Simplify right side
    21,341.58x = 483,105,108.52
  5. Step 5: Solve for x
    x = 483,105,108.52/21,341.58
  6. Step 6: Final answer
    x = 22,636.80

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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.