Home / 21,673.76-29,911.20-12,242.56

Finding the Fourth Proportional to 21,673.76, 29,911.20 and 12,242.56

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Solution

The fourth proportional to 21,673.76, 29,911.20 and 12,242.56 is: 16,895.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,673.76 : 29,911.20 = 12,242.56 : x
  2. Step 2: Convert to fraction form
    21,673.76/29,911.20 = 12,242.56/x
  3. Step 3: Cross multiply
    21,673.76x = 29,911.20 × 12,242.56
  4. Step 4: Simplify right side
    21,673.76x = 366,189,660.67
  5. Step 5: Solve for x
    x = 366,189,660.67/21,673.76
  6. Step 6: Final answer
    x = 16,895.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.