Home / 21,326.77-29,431.57-11,895.13

Finding the Fourth Proportional to 21,326.77, 29,431.57 and 11,895.13

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Solution

The fourth proportional to 21,326.77, 29,431.57 and 11,895.13 is: 16,415.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.77 : 29,431.57 = 11,895.13 : x
  2. Step 2: Convert to fraction form
    21,326.77/29,431.57 = 11,895.13/x
  3. Step 3: Cross multiply
    21,326.77x = 29,431.57 × 11,895.13
  4. Step 4: Simplify right side
    21,326.77x = 350,092,204.10
  5. Step 5: Solve for x
    x = 350,092,204.10/21,326.77
  6. Step 6: Final answer
    x = 16,415.63

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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.