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Finding the Fourth Proportional to 12,939.51, 17,854.65 and 7,273.29

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Solution

The fourth proportional to 12,939.51, 17,854.65 and 7,273.29 is: 10,036.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.51 : 17,854.65 = 7,273.29 : x
  2. Step 2: Convert to fraction form
    12,939.51/17,854.65 = 7,273.29/x
  3. Step 3: Cross multiply
    12,939.51x = 17,854.65 × 7,273.29
  4. Step 4: Simplify right side
    12,939.51x = 129,862,047.30
  5. Step 5: Solve for x
    x = 129,862,047.30/12,939.51
  6. Step 6: Final answer
    x = 10,036.09

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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.