Home / 18,766.89-25,900.07-10,386.09

Finding the Fourth Proportional to 18,766.89, 25,900.07 and 10,386.09

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Solution

The fourth proportional to 18,766.89, 25,900.07 and 10,386.09 is: 14,333.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.89 : 25,900.07 = 10,386.09 : x
  2. Step 2: Convert to fraction form
    18,766.89/25,900.07 = 10,386.09/x
  3. Step 3: Cross multiply
    18,766.89x = 25,900.07 × 10,386.09
  4. Step 4: Simplify right side
    18,766.89x = 269,000,406.10
  5. Step 5: Solve for x
    x = 269,000,406.10/18,766.89
  6. Step 6: Final answer
    x = 14,333.78

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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.