Home / 20,853.44-28,777.74-11,422.34

Finding the Fourth Proportional to 20,853.44, 28,777.74 and 11,422.34

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Solution

The fourth proportional to 20,853.44, 28,777.74 and 11,422.34 is: 15,762.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.44 : 28,777.74 = 11,422.34 : x
  2. Step 2: Convert to fraction form
    20,853.44/28,777.74 = 11,422.34/x
  3. Step 3: Cross multiply
    20,853.44x = 28,777.74 × 11,422.34
  4. Step 4: Simplify right side
    20,853.44x = 328,709,130.71
  5. Step 5: Solve for x
    x = 328,709,130.71/20,853.44
  6. Step 6: Final answer
    x = 15,762.83

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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.