Home / 28,654.65-42,986.30-8,934.75

Finding the Fourth Proportional to 28,654.65, 42,986.30 and 8,934.75

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Solution

The fourth proportional to 28,654.65, 42,986.30 and 8,934.75 is: 13,403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.65 : 42,986.30 = 8,934.75 : x
  2. Step 2: Convert to fraction form
    28,654.65/42,986.30 = 8,934.75/x
  3. Step 3: Cross multiply
    28,654.65x = 42,986.30 × 8,934.75
  4. Step 4: Simplify right side
    28,654.65x = 384,071,799.25
  5. Step 5: Solve for x
    x = 384,071,799.25/28,654.65
  6. Step 6: Final answer
    x = 13,403.47

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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.