Home / 20,976.56-31,435.45-10,436.59

Finding the Fourth Proportional to 20,976.56, 31,435.45 and 10,436.59

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Solution

The fourth proportional to 20,976.56, 31,435.45 and 10,436.59 is: 15,640.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.56 : 31,435.45 = 10,436.59 : x
  2. Step 2: Convert to fraction form
    20,976.56/31,435.45 = 10,436.59/x
  3. Step 3: Cross multiply
    20,976.56x = 31,435.45 × 10,436.59
  4. Step 4: Simplify right side
    20,976.56x = 328,078,739.49
  5. Step 5: Solve for x
    x = 328,078,739.49/20,976.56
  6. Step 6: Final answer
    x = 15,640.26

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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.