Home / 31,740.08-43,804.14-20,436.58

Finding the Fourth Proportional to 31,740.08, 43,804.14 and 20,436.58

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Solution

The fourth proportional to 31,740.08, 43,804.14 and 20,436.58 is: 28,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,740.08 : 43,804.14 = 20,436.58 : x
  2. Step 2: Convert to fraction form
    31,740.08/43,804.14 = 20,436.58/x
  3. Step 3: Cross multiply
    31,740.08x = 43,804.14 × 20,436.58
  4. Step 4: Simplify right side
    31,740.08x = 895,206,811.44
  5. Step 5: Solve for x
    x = 895,206,811.44/31,740.08
  6. Step 6: Final answer
    x = 28,204.30

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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.