Home / 21,957.89-30,301.99-11,886.33

Finding the Fourth Proportional to 21,957.89, 30,301.99 and 11,886.33

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Solution

The fourth proportional to 21,957.89, 30,301.99 and 11,886.33 is: 16,403.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.89 : 30,301.99 = 11,886.33 : x
  2. Step 2: Convert to fraction form
    21,957.89/30,301.99 = 11,886.33/x
  3. Step 3: Cross multiply
    21,957.89x = 30,301.99 × 11,886.33
  4. Step 4: Simplify right side
    21,957.89x = 360,179,536.71
  5. Step 5: Solve for x
    x = 360,179,536.71/21,957.89
  6. Step 6: Final answer
    x = 16,403.20

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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.