Home / 31,680.62-43,715.44-18,256.28

Finding the Fourth Proportional to 31,680.62, 43,715.44 and 18,256.28

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Solution

The fourth proportional to 31,680.62, 43,715.44 and 18,256.28 is: 25,191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,680.62 : 43,715.44 = 18,256.28 : x
  2. Step 2: Convert to fraction form
    31,680.62/43,715.44 = 18,256.28/x
  3. Step 3: Cross multiply
    31,680.62x = 43,715.44 × 18,256.28
  4. Step 4: Simplify right side
    31,680.62x = 798,081,312.96
  5. Step 5: Solve for x
    x = 798,081,312.96/31,680.62
  6. Step 6: Final answer
    x = 25,191.47

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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.