Home / 31,285.56-43,175.15-17,138.40

Finding the Fourth Proportional to 31,285.56, 43,175.15 and 17,138.40

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Solution

The fourth proportional to 31,285.56, 43,175.15 and 17,138.40 is: 23,651.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,285.56 : 43,175.15 = 17,138.40 : x
  2. Step 2: Convert to fraction form
    31,285.56/43,175.15 = 17,138.40/x
  3. Step 3: Cross multiply
    31,285.56x = 43,175.15 × 17,138.40
  4. Step 4: Simplify right side
    31,285.56x = 739,952,905.07
  5. Step 5: Solve for x
    x = 739,952,905.07/31,285.56
  6. Step 6: Final answer
    x = 23,651.58

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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.