Home / 13,718.72-18,933-11,476.64

Finding the Fourth Proportional to 13,718.72, 18,933 and 11,476.64

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Solution

The fourth proportional to 13,718.72, 18,933 and 11,476.64 is: 15,838.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.72 : 18,933 = 11,476.64 : x
  2. Step 2: Convert to fraction form
    13,718.72/18,933 = 11,476.64/x
  3. Step 3: Cross multiply
    13,718.72x = 18,933 × 11,476.64
  4. Step 4: Simplify right side
    13,718.72x = 217,287,225.12
  5. Step 5: Solve for x
    x = 217,287,225.12/13,718.72
  6. Step 6: Final answer
    x = 15,838.74

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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.