Home / 21,370.50-29,491.02-11,939.58

Finding the Fourth Proportional to 21,370.50, 29,491.02 and 11,939.58

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Solution

The fourth proportional to 21,370.50, 29,491.02 and 11,939.58 is: 16,476.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.50 : 29,491.02 = 11,939.58 : x
  2. Step 2: Convert to fraction form
    21,370.50/29,491.02 = 11,939.58/x
  3. Step 3: Cross multiply
    21,370.50x = 29,491.02 × 11,939.58
  4. Step 4: Simplify right side
    21,370.50x = 352,110,392.57
  5. Step 5: Solve for x
    x = 352,110,392.57/21,370.50
  6. Step 6: Final answer
    x = 16,476.47

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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.