Home / 20,462.60-30,714.96-12,689.84

Finding the Fourth Proportional to 20,462.60, 30,714.96 and 12,689.84

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Solution

The fourth proportional to 20,462.60, 30,714.96 and 12,689.84 is: 19,047.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,462.60 : 30,714.96 = 12,689.84 : x
  2. Step 2: Convert to fraction form
    20,462.60/30,714.96 = 12,689.84/x
  3. Step 3: Cross multiply
    20,462.60x = 30,714.96 × 12,689.84
  4. Step 4: Simplify right side
    20,462.60x = 389,767,928.01
  5. Step 5: Solve for x
    x = 389,767,928.01/20,462.60
  6. Step 6: Final answer
    x = 19,047.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.