Home / 20,529.02-30,783.96-10,665.65

Finding the Fourth Proportional to 20,529.02, 30,783.96 and 10,665.65

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Solution

The fourth proportional to 20,529.02, 30,783.96 and 10,665.65 is: 15,993.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.02 : 30,783.96 = 10,665.65 : x
  2. Step 2: Convert to fraction form
    20,529.02/30,783.96 = 10,665.65/x
  3. Step 3: Cross multiply
    20,529.02x = 30,783.96 × 10,665.65
  4. Step 4: Simplify right side
    20,529.02x = 328,330,942.97
  5. Step 5: Solve for x
    x = 328,330,942.97/20,529.02
  6. Step 6: Final answer
    x = 15,993.50

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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.