Home / 21,612.63-29,828.13-12,663.54

Finding the Fourth Proportional to 21,612.63, 29,828.13 and 12,663.54

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Solution

The fourth proportional to 21,612.63, 29,828.13 and 12,663.54 is: 17,477.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.63 : 29,828.13 = 12,663.54 : x
  2. Step 2: Convert to fraction form
    21,612.63/29,828.13 = 12,663.54/x
  3. Step 3: Cross multiply
    21,612.63x = 29,828.13 × 12,663.54
  4. Step 4: Simplify right side
    21,612.63x = 377,729,717.38
  5. Step 5: Solve for x
    x = 377,729,717.38/21,612.63
  6. Step 6: Final answer
    x = 17,477.27

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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.