Home / 31,620.64-43,656.84-20,295.04

Finding the Fourth Proportional to 31,620.64, 43,656.84 and 20,295.04

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Solution

The fourth proportional to 31,620.64, 43,656.84 and 20,295.04 is: 28,020.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,620.64 : 43,656.84 = 20,295.04 : x
  2. Step 2: Convert to fraction form
    31,620.64/43,656.84 = 20,295.04/x
  3. Step 3: Cross multiply
    31,620.64x = 43,656.84 × 20,295.04
  4. Step 4: Simplify right side
    31,620.64x = 886,017,314.07
  5. Step 5: Solve for x
    x = 886,017,314.07/31,620.64
  6. Step 6: Final answer
    x = 28,020.22

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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.