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Finding the Fourth Proportional to 25,259.86, 34,858.86 and 13,929.79

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Solution

The fourth proportional to 25,259.86, 34,858.86 and 13,929.79 is: 19,223.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,259.86 : 34,858.86 = 13,929.79 : x
  2. Step 2: Convert to fraction form
    25,259.86/34,858.86 = 13,929.79/x
  3. Step 3: Cross multiply
    25,259.86x = 34,858.86 × 13,929.79
  4. Step 4: Simplify right side
    25,259.86x = 485,576,599.44
  5. Step 5: Solve for x
    x = 485,576,599.44/25,259.86
  6. Step 6: Final answer
    x = 19,223.25

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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.