Home / 31,284.39-43,152.57-20,529.96

Finding the Fourth Proportional to 31,284.39, 43,152.57 and 20,529.96

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Solution

The fourth proportional to 31,284.39, 43,152.57 and 20,529.96 is: 28,318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,284.39 : 43,152.57 = 20,529.96 : x
  2. Step 2: Convert to fraction form
    31,284.39/43,152.57 = 20,529.96/x
  3. Step 3: Cross multiply
    31,284.39x = 43,152.57 × 20,529.96
  4. Step 4: Simplify right side
    31,284.39x = 885,920,536.00
  5. Step 5: Solve for x
    x = 885,920,536.00/31,284.39
  6. Step 6: Final answer
    x = 28,318.29

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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.