Home / 20,216.58-30,328.10-8,531.52

Finding the Fourth Proportional to 20,216.58, 30,328.10 and 8,531.52

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Solution

The fourth proportional to 20,216.58, 30,328.10 and 8,531.52 is: 12,798.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.58 : 30,328.10 = 8,531.52 : x
  2. Step 2: Convert to fraction form
    20,216.58/30,328.10 = 8,531.52/x
  3. Step 3: Cross multiply
    20,216.58x = 30,328.10 × 8,531.52
  4. Step 4: Simplify right side
    20,216.58x = 258,744,749.05
  5. Step 5: Solve for x
    x = 258,744,749.05/20,216.58
  6. Step 6: Final answer
    x = 12,798.64

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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.