Home / 21,824.36-30,117.62-11,888.36

Finding the Fourth Proportional to 21,824.36, 30,117.62 and 11,888.36

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Solution

The fourth proportional to 21,824.36, 30,117.62 and 11,888.36 is: 16,405.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.36 : 30,117.62 = 11,888.36 : x
  2. Step 2: Convert to fraction form
    21,824.36/30,117.62 = 11,888.36/x
  3. Step 3: Cross multiply
    21,824.36x = 30,117.62 × 11,888.36
  4. Step 4: Simplify right side
    21,824.36x = 358,049,108.90
  5. Step 5: Solve for x
    x = 358,049,108.90/21,824.36
  6. Step 6: Final answer
    x = 16,405.94

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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.