Home / 21,291.02-29,381.22-11,859.38

Finding the Fourth Proportional to 21,291.02, 29,381.22 and 11,859.38

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Solution

The fourth proportional to 21,291.02, 29,381.22 and 11,859.38 is: 16,365.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.02 : 29,381.22 = 11,859.38 : x
  2. Step 2: Convert to fraction form
    21,291.02/29,381.22 = 11,859.38/x
  3. Step 3: Cross multiply
    21,291.02x = 29,381.22 × 11,859.38
  4. Step 4: Simplify right side
    21,291.02x = 348,442,905.94
  5. Step 5: Solve for x
    x = 348,442,905.94/21,291.02
  6. Step 6: Final answer
    x = 16,365.73

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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.