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Finding the Fourth Proportional to 25,405.92, 38,106.36 and 7,873.92

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Solution

The fourth proportional to 25,405.92, 38,106.36 and 7,873.92 is: 11,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,405.92 : 38,106.36 = 7,873.92 : x
  2. Step 2: Convert to fraction form
    25,405.92/38,106.36 = 7,873.92/x
  3. Step 3: Cross multiply
    25,405.92x = 38,106.36 × 7,873.92
  4. Step 4: Simplify right side
    25,405.92x = 300,046,430.13
  5. Step 5: Solve for x
    x = 300,046,430.13/25,405.92
  6. Step 6: Final answer
    x = 11,810.10

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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.