Home / 18,638.36-25,722-10,681.91

Finding the Fourth Proportional to 18,638.36, 25,722 and 10,681.91

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Solution

The fourth proportional to 18,638.36, 25,722 and 10,681.91 is: 14,741.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.36 : 25,722 = 10,681.91 : x
  2. Step 2: Convert to fraction form
    18,638.36/25,722 = 10,681.91/x
  3. Step 3: Cross multiply
    18,638.36x = 25,722 × 10,681.91
  4. Step 4: Simplify right side
    18,638.36x = 274,759,960.41
  5. Step 5: Solve for x
    x = 274,759,960.41/18,638.36
  6. Step 6: Final answer
    x = 14,741.64

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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.