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Finding the Fourth Proportional to 25,959.51, 38,939.26 and 7,238.79

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Solution

The fourth proportional to 25,959.51, 38,939.26 and 7,238.79 is: 10,858.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,959.51 : 38,939.26 = 7,238.79 : x
  2. Step 2: Convert to fraction form
    25,959.51/38,939.26 = 7,238.79/x
  3. Step 3: Cross multiply
    25,959.51x = 38,939.26 × 7,238.79
  4. Step 4: Simplify right side
    25,959.51x = 281,872,931.20
  5. Step 5: Solve for x
    x = 281,872,931.20/25,959.51
  6. Step 6: Final answer
    x = 10,858.18

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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.