Home / 20,529.72-28,344.60-19,116.90

Finding the Fourth Proportional to 20,529.72, 28,344.60 and 19,116.90

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Solution

The fourth proportional to 20,529.72, 28,344.60 and 19,116.90 is: 26,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.72 : 28,344.60 = 19,116.90 : x
  2. Step 2: Convert to fraction form
    20,529.72/28,344.60 = 19,116.90/x
  3. Step 3: Cross multiply
    20,529.72x = 28,344.60 × 19,116.90
  4. Step 4: Simplify right side
    20,529.72x = 541,860,883.74
  5. Step 5: Solve for x
    x = 541,860,883.74/20,529.72
  6. Step 6: Final answer
    x = 26,393.97

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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.