Home / 20,442.24-30,585.60-12,631.68

Finding the Fourth Proportional to 20,442.24, 30,585.60 and 12,631.68

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Solution

The fourth proportional to 20,442.24, 30,585.60 and 12,631.68 is: 18,899.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.24 : 30,585.60 = 12,631.68 : x
  2. Step 2: Convert to fraction form
    20,442.24/30,585.60 = 12,631.68/x
  3. Step 3: Cross multiply
    20,442.24x = 30,585.60 × 12,631.68
  4. Step 4: Simplify right side
    20,442.24x = 386,347,511.81
  5. Step 5: Solve for x
    x = 386,347,511.81/20,442.24
  6. Step 6: Final answer
    x = 18,899.47

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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.