Home / 28,654.39-42,930.74-11,977.66

Finding the Fourth Proportional to 28,654.39, 42,930.74 and 11,977.66

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Solution

The fourth proportional to 28,654.39, 42,930.74 and 11,977.66 is: 17,945.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.39 : 42,930.74 = 11,977.66 : x
  2. Step 2: Convert to fraction form
    28,654.39/42,930.74 = 11,977.66/x
  3. Step 3: Cross multiply
    28,654.39x = 42,930.74 × 11,977.66
  4. Step 4: Simplify right side
    28,654.39x = 514,209,747.38
  5. Step 5: Solve for x
    x = 514,209,747.38/28,654.39
  6. Step 6: Final answer
    x = 17,945.23

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1.5x scale

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.