Home / 21,957.77-30,301.74-11,886.18

Finding the Fourth Proportional to 21,957.77, 30,301.74 and 11,886.18

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Solution

The fourth proportional to 21,957.77, 30,301.74 and 11,886.18 is: 16,402.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.77 : 30,301.74 = 11,886.18 : x
  2. Step 2: Convert to fraction form
    21,957.77/30,301.74 = 11,886.18/x
  3. Step 3: Cross multiply
    21,957.77x = 30,301.74 × 11,886.18
  4. Step 4: Simplify right side
    21,957.77x = 360,171,935.95
  5. Step 5: Solve for x
    x = 360,171,935.95/21,957.77
  6. Step 6: Final answer
    x = 16,402.94

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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.