Home / 21,371.02-29,493.74-11,811.76

Finding the Fourth Proportional to 21,371.02, 29,493.74 and 11,811.76

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Solution

The fourth proportional to 21,371.02, 29,493.74 and 11,811.76 is: 16,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.02 : 29,493.74 = 11,811.76 : x
  2. Step 2: Convert to fraction form
    21,371.02/29,493.74 = 11,811.76/x
  3. Step 3: Cross multiply
    21,371.02x = 29,493.74 × 11,811.76
  4. Step 4: Simplify right side
    21,371.02x = 348,372,978.38
  5. Step 5: Solve for x
    x = 348,372,978.38/21,371.02
  6. Step 6: Final answer
    x = 16,301.19

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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.