Home / 21,386.73-29,513.77-11,955.30

Finding the Fourth Proportional to 21,386.73, 29,513.77 and 11,955.30

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Solution

The fourth proportional to 21,386.73, 29,513.77 and 11,955.30 is: 16,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.73 : 29,513.77 = 11,955.30 : x
  2. Step 2: Convert to fraction form
    21,386.73/29,513.77 = 11,955.30/x
  3. Step 3: Cross multiply
    21,386.73x = 29,513.77 × 11,955.30
  4. Step 4: Simplify right side
    21,386.73x = 352,845,833.92
  5. Step 5: Solve for x
    x = 352,845,833.92/21,386.73
  6. Step 6: Final answer
    x = 16,498.35

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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.