Home / 21,491.76-29,661.36-12,063.36

Finding the Fourth Proportional to 21,491.76, 29,661.36 and 12,063.36

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Solution

The fourth proportional to 21,491.76, 29,661.36 and 12,063.36 is: 16,648.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.76 : 29,661.36 = 12,063.36 : x
  2. Step 2: Convert to fraction form
    21,491.76/29,661.36 = 12,063.36/x
  3. Step 3: Cross multiply
    21,491.76x = 29,661.36 × 12,063.36
  4. Step 4: Simplify right side
    21,491.76x = 357,815,663.77
  5. Step 5: Solve for x
    x = 357,815,663.77/21,491.76
  6. Step 6: Final answer
    x = 16,648.97

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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.