Home / 20,765.52-28,660.50-14,474.28

Finding the Fourth Proportional to 20,765.52, 28,660.50 and 14,474.28

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Solution

The fourth proportional to 20,765.52, 28,660.50 and 14,474.28 is: 19,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.52 : 28,660.50 = 14,474.28 : x
  2. Step 2: Convert to fraction form
    20,765.52/28,660.50 = 14,474.28/x
  3. Step 3: Cross multiply
    20,765.52x = 28,660.50 × 14,474.28
  4. Step 4: Simplify right side
    20,765.52x = 414,840,101.94
  5. Step 5: Solve for x
    x = 414,840,101.94/20,765.52
  6. Step 6: Final answer
    x = 19,977.35

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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.