Home / 20,382.57-28,125.36-11,887.46

Finding the Fourth Proportional to 20,382.57, 28,125.36 and 11,887.46

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Solution

The fourth proportional to 20,382.57, 28,125.36 and 11,887.46 is: 16,403.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.57 : 28,125.36 = 11,887.46 : x
  2. Step 2: Convert to fraction form
    20,382.57/28,125.36 = 11,887.46/x
  3. Step 3: Cross multiply
    20,382.57x = 28,125.36 × 11,887.46
  4. Step 4: Simplify right side
    20,382.57x = 334,339,056.83
  5. Step 5: Solve for x
    x = 334,339,056.83/20,382.57
  6. Step 6: Final answer
    x = 16,403.18

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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.