Home / 20,756.97-28,586.79-19,422.90

Finding the Fourth Proportional to 20,756.97, 28,586.79 and 19,422.90

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Solution

The fourth proportional to 20,756.97, 28,586.79 and 19,422.90 is: 26,749.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.97 : 28,586.79 = 19,422.90 : x
  2. Step 2: Convert to fraction form
    20,756.97/28,586.79 = 19,422.90/x
  3. Step 3: Cross multiply
    20,756.97x = 28,586.79 × 19,422.90
  4. Step 4: Simplify right side
    20,756.97x = 555,238,363.49
  5. Step 5: Solve for x
    x = 555,238,363.49/20,756.97
  6. Step 6: Final answer
    x = 26,749.49

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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.