Home / 21,337.76-31,936.92-19,291.56

Finding the Fourth Proportional to 21,337.76, 31,936.92 and 19,291.56

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Solution

The fourth proportional to 21,337.76, 31,936.92 and 19,291.56 is: 28,874.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.76 : 31,936.92 = 19,291.56 : x
  2. Step 2: Convert to fraction form
    21,337.76/31,936.92 = 19,291.56/x
  3. Step 3: Cross multiply
    21,337.76x = 31,936.92 × 19,291.56
  4. Step 4: Simplify right side
    21,337.76x = 616,113,008.40
  5. Step 5: Solve for x
    x = 616,113,008.40/21,337.76
  6. Step 6: Final answer
    x = 28,874.31

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1.5x scale

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.