Home / 28,742.33-43,115.65-7,681.89

Finding the Fourth Proportional to 28,742.33, 43,115.65 and 7,681.89

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Solution

The fourth proportional to 28,742.33, 43,115.65 and 7,681.89 is: 11,523.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,742.33 : 43,115.65 = 7,681.89 : x
  2. Step 2: Convert to fraction form
    28,742.33/43,115.65 = 7,681.89/x
  3. Step 3: Cross multiply
    28,742.33x = 43,115.65 × 7,681.89
  4. Step 4: Simplify right side
    28,742.33x = 331,209,883.08
  5. Step 5: Solve for x
    x = 331,209,883.08/28,742.33
  6. Step 6: Final answer
    x = 11,523.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.