Home / 21,508.09-29,660.52-13,951.67

Finding the Fourth Proportional to 21,508.09, 29,660.52 and 13,951.67

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Solution

The fourth proportional to 21,508.09, 29,660.52 and 13,951.67 is: 19,239.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.09 : 29,660.52 = 13,951.67 : x
  2. Step 2: Convert to fraction form
    21,508.09/29,660.52 = 13,951.67/x
  3. Step 3: Cross multiply
    21,508.09x = 29,660.52 × 13,951.67
  4. Step 4: Simplify right side
    21,508.09x = 413,813,787.07
  5. Step 5: Solve for x
    x = 413,813,787.07/21,508.09
  6. Step 6: Final answer
    x = 19,239.91

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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.