Home / 20,675.66-28,520.61-12,712.24

Finding the Fourth Proportional to 20,675.66, 28,520.61 and 12,712.24

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Solution

The fourth proportional to 20,675.66, 28,520.61 and 12,712.24 is: 17,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.66 : 28,520.61 = 12,712.24 : x
  2. Step 2: Convert to fraction form
    20,675.66/28,520.61 = 12,712.24/x
  3. Step 3: Cross multiply
    20,675.66x = 28,520.61 × 12,712.24
  4. Step 4: Simplify right side
    20,675.66x = 362,560,827.25
  5. Step 5: Solve for x
    x = 362,560,827.25/20,675.66
  6. Step 6: Final answer
    x = 17,535.64

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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.