Home / 31,487.36-43,446.84-18,912.32

Finding the Fourth Proportional to 31,487.36, 43,446.84 and 18,912.32

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Solution

The fourth proportional to 31,487.36, 43,446.84 and 18,912.32 is: 26,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.36 : 43,446.84 = 18,912.32 : x
  2. Step 2: Convert to fraction form
    31,487.36/43,446.84 = 18,912.32/x
  3. Step 3: Cross multiply
    31,487.36x = 43,446.84 × 18,912.32
  4. Step 4: Simplify right side
    31,487.36x = 821,680,541.07
  5. Step 5: Solve for x
    x = 821,680,541.07/31,487.36
  6. Step 6: Final answer
    x = 26,095.57

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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.