Home / 20,442.86-28,213.76-12,483.41

Finding the Fourth Proportional to 20,442.86, 28,213.76 and 12,483.41

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Solution

The fourth proportional to 20,442.86, 28,213.76 and 12,483.41 is: 17,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.86 : 28,213.76 = 12,483.41 : x
  2. Step 2: Convert to fraction form
    20,442.86/28,213.76 = 12,483.41/x
  3. Step 3: Cross multiply
    20,442.86x = 28,213.76 × 12,483.41
  4. Step 4: Simplify right side
    20,442.86x = 352,203,871.30
  5. Step 5: Solve for x
    x = 352,203,871.30/20,442.86
  6. Step 6: Final answer
    x = 17,228.70

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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.