Home / 21,368.82-29,488.41-11,808.66

Finding the Fourth Proportional to 21,368.82, 29,488.41 and 11,808.66

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Solution

The fourth proportional to 21,368.82, 29,488.41 and 11,808.66 is: 16,295.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.82 : 29,488.41 = 11,808.66 : x
  2. Step 2: Convert to fraction form
    21,368.82/29,488.41 = 11,808.66/x
  3. Step 3: Cross multiply
    21,368.82x = 29,488.41 × 11,808.66
  4. Step 4: Simplify right side
    21,368.82x = 348,218,607.63
  5. Step 5: Solve for x
    x = 348,218,607.63/21,368.82
  6. Step 6: Final answer
    x = 16,295.64

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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.