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Finding the Fourth Proportional to 25,162, 34,725 and 13,987.60

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Solution

The fourth proportional to 25,162, 34,725 and 13,987.60 is: 19,303.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,162 : 34,725 = 13,987.60 : x
  2. Step 2: Convert to fraction form
    25,162/34,725 = 13,987.60/x
  3. Step 3: Cross multiply
    25,162x = 34,725 × 13,987.60
  4. Step 4: Simplify right side
    25,162x = 485,719,410
  5. Step 5: Solve for x
    x = 485,719,410/25,162
  6. Step 6: Final answer
    x = 19,303.69

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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.