Home / 21,359.66-29,476.41-11,928.38

Finding the Fourth Proportional to 21,359.66, 29,476.41 and 11,928.38

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Solution

The fourth proportional to 21,359.66, 29,476.41 and 11,928.38 is: 16,461.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359.66 : 29,476.41 = 11,928.38 : x
  2. Step 2: Convert to fraction form
    21,359.66/29,476.41 = 11,928.38/x
  3. Step 3: Cross multiply
    21,359.66x = 29,476.41 × 11,928.38
  4. Step 4: Simplify right side
    21,359.66x = 351,605,819.52
  5. Step 5: Solve for x
    x = 351,605,819.52/21,359.66
  6. Step 6: Final answer
    x = 16,461.21

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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.