Home / 31,455.80-43,408.93-17,308.65

Finding the Fourth Proportional to 31,455.80, 43,408.93 and 17,308.65

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Solution

The fourth proportional to 31,455.80, 43,408.93 and 17,308.65 is: 23,885.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.80 : 43,408.93 = 17,308.65 : x
  2. Step 2: Convert to fraction form
    31,455.80/43,408.93 = 17,308.65/x
  3. Step 3: Cross multiply
    31,455.80x = 43,408.93 × 17,308.65
  4. Step 4: Simplify right side
    31,455.80x = 751,349,759.20
  5. Step 5: Solve for x
    x = 751,349,759.20/31,455.80
  6. Step 6: Final answer
    x = 23,885.89

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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.