Home / 20,448.20-30,701.10-12,672.20

Finding the Fourth Proportional to 20,448.20, 30,701.10 and 12,672.20

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Solution

The fourth proportional to 20,448.20, 30,701.10 and 12,672.20 is: 19,026.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.20 : 30,701.10 = 12,672.20 : x
  2. Step 2: Convert to fraction form
    20,448.20/30,701.10 = 12,672.20/x
  3. Step 3: Cross multiply
    20,448.20x = 30,701.10 × 12,672.20
  4. Step 4: Simplify right side
    20,448.20x = 389,050,479.42
  5. Step 5: Solve for x
    x = 389,050,479.42/20,448.20
  6. Step 6: Final answer
    x = 19,026.15

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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.