Home / 31,551.38-43,537.74-18,628.64

Finding the Fourth Proportional to 31,551.38, 43,537.74 and 18,628.64

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Solution

The fourth proportional to 31,551.38, 43,537.74 and 18,628.64 is: 25,705.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,551.38 : 43,537.74 = 18,628.64 : x
  2. Step 2: Convert to fraction form
    31,551.38/43,537.74 = 18,628.64/x
  3. Step 3: Cross multiply
    31,551.38x = 43,537.74 × 18,628.64
  4. Step 4: Simplify right side
    31,551.38x = 811,048,667.18
  5. Step 5: Solve for x
    x = 811,048,667.18/31,551.38
  6. Step 6: Final answer
    x = 25,705.65

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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.