Home / 18,638.39-25,721.08-10,681.09

Finding the Fourth Proportional to 18,638.39, 25,721.08 and 10,681.09

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Solution

The fourth proportional to 18,638.39, 25,721.08 and 10,681.09 is: 14,739.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.39 : 25,721.08 = 10,681.09 : x
  2. Step 2: Convert to fraction form
    18,638.39/25,721.08 = 10,681.09/x
  3. Step 3: Cross multiply
    18,638.39x = 25,721.08 × 10,681.09
  4. Step 4: Simplify right side
    18,638.39x = 274,729,079.37
  5. Step 5: Solve for x
    x = 274,729,079.37/18,638.39
  6. Step 6: Final answer
    x = 14,739.96

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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.