Home / 31,487.17-43,450.73-20,309.17

Finding the Fourth Proportional to 31,487.17, 43,450.73 and 20,309.17

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Solution

The fourth proportional to 31,487.17, 43,450.73 and 20,309.17 is: 28,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.17 : 43,450.73 = 20,309.17 : x
  2. Step 2: Convert to fraction form
    31,487.17/43,450.73 = 20,309.17/x
  3. Step 3: Cross multiply
    31,487.17x = 43,450.73 × 20,309.17
  4. Step 4: Simplify right side
    31,487.17x = 882,448,160.65
  5. Step 5: Solve for x
    x = 882,448,160.65/31,487.17
  6. Step 6: Final answer
    x = 28,025.64

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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.