Home / 21,386.44-29,513.94-11,955.40

Finding the Fourth Proportional to 21,386.44, 29,513.94 and 11,955.40

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Solution

The fourth proportional to 21,386.44, 29,513.94 and 11,955.40 is: 16,498.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.44 : 29,513.94 = 11,955.40 : x
  2. Step 2: Convert to fraction form
    21,386.44/29,513.94 = 11,955.40/x
  3. Step 3: Cross multiply
    21,386.44x = 29,513.94 × 11,955.40
  4. Step 4: Simplify right side
    21,386.44x = 352,850,958.28
  5. Step 5: Solve for x
    x = 352,850,958.28/21,386.44
  6. Step 6: Final answer
    x = 16,498.82

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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.