Home / 20,207.10-30,314.73-8,520.30

Finding the Fourth Proportional to 20,207.10, 30,314.73 and 8,520.30

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Solution

The fourth proportional to 20,207.10, 30,314.73 and 8,520.30 is: 12,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.10 : 30,314.73 = 8,520.30 : x
  2. Step 2: Convert to fraction form
    20,207.10/30,314.73 = 8,520.30/x
  3. Step 3: Cross multiply
    20,207.10x = 30,314.73 × 8,520.30
  4. Step 4: Simplify right side
    20,207.10x = 258,290,594.02
  5. Step 5: Solve for x
    x = 258,290,594.02/20,207.10
  6. Step 6: Final answer
    x = 12,782.17

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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.