Home / 21,208.12-29,268.18-11,776.72

Finding the Fourth Proportional to 21,208.12, 29,268.18 and 11,776.72

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Solution

The fourth proportional to 21,208.12, 29,268.18 and 11,776.72 is: 16,252.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.12 : 29,268.18 = 11,776.72 : x
  2. Step 2: Convert to fraction form
    21,208.12/29,268.18 = 11,776.72/x
  3. Step 3: Cross multiply
    21,208.12x = 29,268.18 × 11,776.72
  4. Step 4: Simplify right side
    21,208.12x = 344,683,160.77
  5. Step 5: Solve for x
    x = 344,683,160.77/21,208.12
  6. Step 6: Final answer
    x = 16,252.41

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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.