Home / 20,725.07-31,081.32-10,858.86

Finding the Fourth Proportional to 20,725.07, 31,081.32 and 10,858.86

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Solution

The fourth proportional to 20,725.07, 31,081.32 and 10,858.86 is: 16,285.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.07 : 31,081.32 = 10,858.86 : x
  2. Step 2: Convert to fraction form
    20,725.07/31,081.32 = 10,858.86/x
  3. Step 3: Cross multiply
    20,725.07x = 31,081.32 × 10,858.86
  4. Step 4: Simplify right side
    20,725.07x = 337,507,702.50
  5. Step 5: Solve for x
    x = 337,507,702.50/20,725.07
  6. Step 6: Final answer
    x = 16,285.00

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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.