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Finding the Fourth Proportional to 25,259.79, 34,858.79 and 13,929.32

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Solution

The fourth proportional to 25,259.79, 34,858.79 and 13,929.32 is: 19,222.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,259.79 : 34,858.79 = 13,929.32 : x
  2. Step 2: Convert to fraction form
    25,259.79/34,858.79 = 13,929.32/x
  3. Step 3: Cross multiply
    25,259.79x = 34,858.79 × 13,929.32
  4. Step 4: Simplify right side
    25,259.79x = 485,559,240.72
  5. Step 5: Solve for x
    x = 485,559,240.72/25,259.79
  6. Step 6: Final answer
    x = 19,222.62

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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.