Home / 25,786.09-38,715.06-13,315.11

Finding the Fourth Proportional to 25,786.09, 38,715.06 and 13,315.11

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Solution

The fourth proportional to 25,786.09, 38,715.06 and 13,315.11 is: 19,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,786.09 : 38,715.06 = 13,315.11 : x
  2. Step 2: Convert to fraction form
    25,786.09/38,715.06 = 13,315.11/x
  3. Step 3: Cross multiply
    25,786.09x = 38,715.06 × 13,315.11
  4. Step 4: Simplify right side
    25,786.09x = 515,495,282.56
  5. Step 5: Solve for x
    x = 515,495,282.56/25,786.09
  6. Step 6: Final answer
    x = 19,991.22

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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.