Home / 20,437.75-28,204.32-11,945.71

Finding the Fourth Proportional to 20,437.75, 28,204.32 and 11,945.71

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Solution

The fourth proportional to 20,437.75, 28,204.32 and 11,945.71 is: 16,485.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.75 : 28,204.32 = 11,945.71 : x
  2. Step 2: Convert to fraction form
    20,437.75/28,204.32 = 11,945.71/x
  3. Step 3: Cross multiply
    20,437.75x = 28,204.32 × 11,945.71
  4. Step 4: Simplify right side
    20,437.75x = 336,920,627.47
  5. Step 5: Solve for x
    x = 336,920,627.47/20,437.75
  6. Step 6: Final answer
    x = 16,485.21

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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.