Home / 19,711.90-27,206.76-12,540.34

Finding the Fourth Proportional to 19,711.90, 27,206.76 and 12,540.34

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Solution

The fourth proportional to 19,711.90, 27,206.76 and 12,540.34 is: 17,308.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,711.90 : 27,206.76 = 12,540.34 : x
  2. Step 2: Convert to fraction form
    19,711.90/27,206.76 = 12,540.34/x
  3. Step 3: Cross multiply
    19,711.90x = 27,206.76 × 12,540.34
  4. Step 4: Simplify right side
    19,711.90x = 341,182,020.70
  5. Step 5: Solve for x
    x = 341,182,020.70/19,711.90
  6. Step 6: Final answer
    x = 17,308.43

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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.