Home / 20,382.10-30,563.43-8,688.94

Finding the Fourth Proportional to 20,382.10, 30,563.43 and 8,688.94

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Solution

The fourth proportional to 20,382.10, 30,563.43 and 8,688.94 is: 13,029.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.10 : 30,563.43 = 8,688.94 : x
  2. Step 2: Convert to fraction form
    20,382.10/30,563.43 = 8,688.94/x
  3. Step 3: Cross multiply
    20,382.10x = 30,563.43 × 8,688.94
  4. Step 4: Simplify right side
    20,382.10x = 265,563,700.47
  5. Step 5: Solve for x
    x = 265,563,700.47/20,382.10
  6. Step 6: Final answer
    x = 13,029.26

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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.