Home / 21,915.76-30,243.74-11,844.16

Finding the Fourth Proportional to 21,915.76, 30,243.74 and 11,844.16

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Solution

The fourth proportional to 21,915.76, 30,243.74 and 11,844.16 is: 16,344.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.76 : 30,243.74 = 11,844.16 : x
  2. Step 2: Convert to fraction form
    21,915.76/30,243.74 = 11,844.16/x
  3. Step 3: Cross multiply
    21,915.76x = 30,243.74 × 11,844.16
  4. Step 4: Simplify right side
    21,915.76x = 358,211,695.56
  5. Step 5: Solve for x
    x = 358,211,695.56/21,915.76
  6. Step 6: Final answer
    x = 16,344.94

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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.