Home / 19,713.34-27,186.65-12,638.38

Finding the Fourth Proportional to 19,713.34, 27,186.65 and 12,638.38

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Solution

The fourth proportional to 19,713.34, 27,186.65 and 12,638.38 is: 17,429.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,713.34 : 27,186.65 = 12,638.38 : x
  2. Step 2: Convert to fraction form
    19,713.34/27,186.65 = 12,638.38/x
  3. Step 3: Cross multiply
    19,713.34x = 27,186.65 × 12,638.38
  4. Step 4: Simplify right side
    19,713.34x = 343,595,213.63
  5. Step 5: Solve for x
    x = 343,595,213.63/19,713.34
  6. Step 6: Final answer
    x = 17,429.58

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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.