Home / 28,138.37-42,197.27-12,332.52

Finding the Fourth Proportional to 28,138.37, 42,197.27 and 12,332.52

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Solution

The fourth proportional to 28,138.37, 42,197.27 and 12,332.52 is: 18,494.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.37 : 42,197.27 = 12,332.52 : x
  2. Step 2: Convert to fraction form
    28,138.37/42,197.27 = 12,332.52/x
  3. Step 3: Cross multiply
    28,138.37x = 42,197.27 × 12,332.52
  4. Step 4: Simplify right side
    28,138.37x = 520,398,614.56
  5. Step 5: Solve for x
    x = 520,398,614.56/28,138.37
  6. Step 6: Final answer
    x = 18,494.27

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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.