Home / 21,366.36-29,485.64-11,935.28

Finding the Fourth Proportional to 21,366.36, 29,485.64 and 11,935.28

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Solution

The fourth proportional to 21,366.36, 29,485.64 and 11,935.28 is: 16,470.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366.36 : 29,485.64 = 11,935.28 : x
  2. Step 2: Convert to fraction form
    21,366.36/29,485.64 = 11,935.28/x
  3. Step 3: Cross multiply
    21,366.36x = 29,485.64 × 11,935.28
  4. Step 4: Simplify right side
    21,366.36x = 351,919,369.38
  5. Step 5: Solve for x
    x = 351,919,369.38/21,366.36
  6. Step 6: Final answer
    x = 16,470.72

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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.