Home / 19,700.28-27,204.80-12,638.97

Finding the Fourth Proportional to 19,700.28, 27,204.80 and 12,638.97

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Solution

The fourth proportional to 19,700.28, 27,204.80 and 12,638.97 is: 17,453.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,700.28 : 27,204.80 = 12,638.97 : x
  2. Step 2: Convert to fraction form
    19,700.28/27,204.80 = 12,638.97/x
  3. Step 3: Cross multiply
    19,700.28x = 27,204.80 × 12,638.97
  4. Step 4: Simplify right side
    19,700.28x = 343,840,587.86
  5. Step 5: Solve for x
    x = 343,840,587.86/19,700.28
  6. Step 6: Final answer
    x = 17,453.59

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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.