Home / 20,462.88-28,235.04-12,903.96

Finding the Fourth Proportional to 20,462.88, 28,235.04 and 12,903.96

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Solution

The fourth proportional to 20,462.88, 28,235.04 and 12,903.96 is: 17,805.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.88 : 28,235.04 = 12,903.96 : x
  2. Step 2: Convert to fraction form
    20,462.88/28,235.04 = 12,903.96/x
  3. Step 3: Cross multiply
    20,462.88x = 28,235.04 × 12,903.96
  4. Step 4: Simplify right side
    20,462.88x = 364,343,826.76
  5. Step 5: Solve for x
    x = 364,343,826.76/20,462.88
  6. Step 6: Final answer
    x = 17,805.11

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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.