Home / 25,790.40-38,687.62-10,999.42

Finding the Fourth Proportional to 25,790.40, 38,687.62 and 10,999.42

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Solution

The fourth proportional to 25,790.40, 38,687.62 and 10,999.42 is: 16,499.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,790.40 : 38,687.62 = 10,999.42 : x
  2. Step 2: Convert to fraction form
    25,790.40/38,687.62 = 10,999.42/x
  3. Step 3: Cross multiply
    25,790.40x = 38,687.62 × 10,999.42
  4. Step 4: Simplify right side
    25,790.40x = 425,541,381.18
  5. Step 5: Solve for x
    x = 425,541,381.18/25,790.40
  6. Step 6: Final answer
    x = 16,499.99

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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.