Home / 14,939.76-20,621.40-8,653.68

Finding the Fourth Proportional to 14,939.76, 20,621.40 and 8,653.68

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Solution

The fourth proportional to 14,939.76, 20,621.40 and 8,653.68 is: 11,944.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,939.76 : 20,621.40 = 8,653.68 : x
  2. Step 2: Convert to fraction form
    14,939.76/20,621.40 = 8,653.68/x
  3. Step 3: Cross multiply
    14,939.76x = 20,621.40 × 8,653.68
  4. Step 4: Simplify right side
    14,939.76x = 178,450,996.75
  5. Step 5: Solve for x
    x = 178,450,996.75/14,939.76
  6. Step 6: Final answer
    x = 11,944.70

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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.