Home / 21,161.79-31,748.90-9,472.41

Finding the Fourth Proportional to 21,161.79, 31,748.90 and 9,472.41

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Solution

The fourth proportional to 21,161.79, 31,748.90 and 9,472.41 is: 14,211.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.79 : 31,748.90 = 9,472.41 : x
  2. Step 2: Convert to fraction form
    21,161.79/31,748.90 = 9,472.41/x
  3. Step 3: Cross multiply
    21,161.79x = 31,748.90 × 9,472.41
  4. Step 4: Simplify right side
    21,161.79x = 300,738,550.49
  5. Step 5: Solve for x
    x = 300,738,550.49/21,161.79
  6. Step 6: Final answer
    x = 14,211.39

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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.