Home / 20,328.09-30,447.72-8,445.84

Finding the Fourth Proportional to 20,328.09, 30,447.72 and 8,445.84

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Solution

The fourth proportional to 20,328.09, 30,447.72 and 8,445.84 is: 12,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.09 : 30,447.72 = 8,445.84 : x
  2. Step 2: Convert to fraction form
    20,328.09/30,447.72 = 8,445.84/x
  3. Step 3: Cross multiply
    20,328.09x = 30,447.72 × 8,445.84
  4. Step 4: Simplify right side
    20,328.09x = 257,156,457.31
  5. Step 5: Solve for x
    x = 257,156,457.31/20,328.09
  6. Step 6: Final answer
    x = 12,650.30

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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.