Home / 20,510.11-28,305.96-12,011.69

Finding the Fourth Proportional to 20,510.11, 28,305.96 and 12,011.69

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Solution

The fourth proportional to 20,510.11, 28,305.96 and 12,011.69 is: 16,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.11 : 28,305.96 = 12,011.69 : x
  2. Step 2: Convert to fraction form
    20,510.11/28,305.96 = 12,011.69/x
  3. Step 3: Cross multiply
    20,510.11x = 28,305.96 × 12,011.69
  4. Step 4: Simplify right side
    20,510.11x = 340,002,442.39
  5. Step 5: Solve for x
    x = 340,002,442.39/20,510.11
  6. Step 6: Final answer
    x = 16,577.31

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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.