Home / 18,515.09-25,551.57-10,131.59

Finding the Fourth Proportional to 18,515.09, 25,551.57 and 10,131.59

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Solution

The fourth proportional to 18,515.09, 25,551.57 and 10,131.59 is: 13,982.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.09 : 25,551.57 = 10,131.59 : x
  2. Step 2: Convert to fraction form
    18,515.09/25,551.57 = 10,131.59/x
  3. Step 3: Cross multiply
    18,515.09x = 25,551.57 × 10,131.59
  4. Step 4: Simplify right side
    18,515.09x = 258,877,903.34
  5. Step 5: Solve for x
    x = 258,877,903.34/18,515.09
  6. Step 6: Final answer
    x = 13,982.00

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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.