Home / 20,416.92-28,178.40-12,463.75

Finding the Fourth Proportional to 20,416.92, 28,178.40 and 12,463.75

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Solution

The fourth proportional to 20,416.92, 28,178.40 and 12,463.75 is: 17,201.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.92 : 28,178.40 = 12,463.75 : x
  2. Step 2: Convert to fraction form
    20,416.92/28,178.40 = 12,463.75/x
  3. Step 3: Cross multiply
    20,416.92x = 28,178.40 × 12,463.75
  4. Step 4: Simplify right side
    20,416.92x = 351,208,533
  5. Step 5: Solve for x
    x = 351,208,533/20,416.92
  6. Step 6: Final answer
    x = 17,201.84

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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.