Home / 20,414.58-28,168.47-12,345.90

Finding the Fourth Proportional to 20,414.58, 28,168.47 and 12,345.90

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Solution

The fourth proportional to 20,414.58, 28,168.47 and 12,345.90 is: 17,035.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.58 : 28,168.47 = 12,345.90 : x
  2. Step 2: Convert to fraction form
    20,414.58/28,168.47 = 12,345.90/x
  3. Step 3: Cross multiply
    20,414.58x = 28,168.47 × 12,345.90
  4. Step 4: Simplify right side
    20,414.58x = 347,765,113.77
  5. Step 5: Solve for x
    x = 347,765,113.77/20,414.58
  6. Step 6: Final answer
    x = 17,035.13

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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.