Home / 21,960.18-30,304.94-11,888.51

Finding the Fourth Proportional to 21,960.18, 30,304.94 and 11,888.51

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Solution

The fourth proportional to 21,960.18, 30,304.94 and 11,888.51 is: 16,406.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.18 : 30,304.94 = 11,888.51 : x
  2. Step 2: Convert to fraction form
    21,960.18/30,304.94 = 11,888.51/x
  3. Step 3: Cross multiply
    21,960.18x = 30,304.94 × 11,888.51
  4. Step 4: Simplify right side
    21,960.18x = 360,280,371.27
  5. Step 5: Solve for x
    x = 360,280,371.27/21,960.18
  6. Step 6: Final answer
    x = 16,406.08

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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.