Home / 18,681.13-25,789.37-12,316.96

Finding the Fourth Proportional to 18,681.13, 25,789.37 and 12,316.96

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Solution

The fourth proportional to 18,681.13, 25,789.37 and 12,316.96 is: 17,003.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.13 : 25,789.37 = 12,316.96 : x
  2. Step 2: Convert to fraction form
    18,681.13/25,789.37 = 12,316.96/x
  3. Step 3: Cross multiply
    18,681.13x = 25,789.37 × 12,316.96
  4. Step 4: Simplify right side
    18,681.13x = 317,646,638.72
  5. Step 5: Solve for x
    x = 317,646,638.72/18,681.13
  6. Step 6: Final answer
    x = 17,003.61

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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.