Home / 21,717.10-29,969.76-12,285.46

Finding the Fourth Proportional to 21,717.10, 29,969.76 and 12,285.46

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Solution

The fourth proportional to 21,717.10, 29,969.76 and 12,285.46 is: 16,954.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.10 : 29,969.76 = 12,285.46 : x
  2. Step 2: Convert to fraction form
    21,717.10/29,969.76 = 12,285.46/x
  3. Step 3: Cross multiply
    21,717.10x = 29,969.76 × 12,285.46
  4. Step 4: Simplify right side
    21,717.10x = 368,192,287.69
  5. Step 5: Solve for x
    x = 368,192,287.69/21,717.10
  6. Step 6: Final answer
    x = 16,954.03

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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.