Home / 21,371-29,491.44-11,939.63

Finding the Fourth Proportional to 21,371, 29,491.44 and 11,939.63

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Solution

The fourth proportional to 21,371, 29,491.44 and 11,939.63 is: 16,476.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371 : 29,491.44 = 11,939.63 : x
  2. Step 2: Convert to fraction form
    21,371/29,491.44 = 11,939.63/x
  3. Step 3: Cross multiply
    21,371x = 29,491.44 × 11,939.63
  4. Step 4: Simplify right side
    21,371x = 352,116,881.77
  5. Step 5: Solve for x
    x = 352,116,881.77/21,371
  6. Step 6: Final answer
    x = 16,476.39

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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.