Home / 18,788.86-25,928.31-10,405.18

Finding the Fourth Proportional to 18,788.86, 25,928.31 and 10,405.18

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Solution

The fourth proportional to 18,788.86, 25,928.31 and 10,405.18 is: 14,358.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.86 : 25,928.31 = 10,405.18 : x
  2. Step 2: Convert to fraction form
    18,788.86/25,928.31 = 10,405.18/x
  3. Step 3: Cross multiply
    18,788.86x = 25,928.31 × 10,405.18
  4. Step 4: Simplify right side
    18,788.86x = 269,788,732.65
  5. Step 5: Solve for x
    x = 269,788,732.65/18,788.86
  6. Step 6: Final answer
    x = 14,358.97

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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.