Home / 25,785.09-38,713.56-13,314.11

Finding the Fourth Proportional to 25,785.09, 38,713.56 and 13,314.11

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Solution

The fourth proportional to 25,785.09, 38,713.56 and 13,314.11 is: 19,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,785.09 : 38,713.56 = 13,314.11 : x
  2. Step 2: Convert to fraction form
    25,785.09/38,713.56 = 13,314.11/x
  3. Step 3: Cross multiply
    25,785.09x = 38,713.56 × 13,314.11
  4. Step 4: Simplify right side
    25,785.09x = 515,436,466.26
  5. Step 5: Solve for x
    x = 515,436,466.26/25,785.09
  6. Step 6: Final answer
    x = 19,989.71

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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.