Home / 30,216.86-41,665.64-20,658.30

Finding the Fourth Proportional to 30,216.86, 41,665.64 and 20,658.30

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Solution

The fourth proportional to 30,216.86, 41,665.64 and 20,658.30 is: 28,485.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,216.86 : 41,665.64 = 20,658.30 : x
  2. Step 2: Convert to fraction form
    30,216.86/41,665.64 = 20,658.30/x
  3. Step 3: Cross multiply
    30,216.86x = 41,665.64 × 20,658.30
  4. Step 4: Simplify right side
    30,216.86x = 860,741,342.46
  5. Step 5: Solve for x
    x = 860,741,342.46/30,216.86
  6. Step 6: Final answer
    x = 28,485.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.