Home / 21,110.63-29,133.59-11,679.21

Finding the Fourth Proportional to 21,110.63, 29,133.59 and 11,679.21

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Solution

The fourth proportional to 21,110.63, 29,133.59 and 11,679.21 is: 16,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.63 : 29,133.59 = 11,679.21 : x
  2. Step 2: Convert to fraction form
    21,110.63/29,133.59 = 11,679.21/x
  3. Step 3: Cross multiply
    21,110.63x = 29,133.59 × 11,679.21
  4. Step 4: Simplify right side
    21,110.63x = 340,257,257.27
  5. Step 5: Solve for x
    x = 340,257,257.27/21,110.63
  6. Step 6: Final answer
    x = 16,117.82

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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.