Home / 20,670.60-28,529.54-12,285.48

Finding the Fourth Proportional to 20,670.60, 28,529.54 and 12,285.48

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Solution

The fourth proportional to 20,670.60, 28,529.54 and 12,285.48 is: 16,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.60 : 28,529.54 = 12,285.48 : x
  2. Step 2: Convert to fraction form
    20,670.60/28,529.54 = 12,285.48/x
  3. Step 3: Cross multiply
    20,670.60x = 28,529.54 × 12,285.48
  4. Step 4: Simplify right side
    20,670.60x = 350,499,093.08
  5. Step 5: Solve for x
    x = 350,499,093.08/20,670.60
  6. Step 6: Final answer
    x = 16,956.41

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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.