Home / 18,639.09-25,720.88-10,255.59

Finding the Fourth Proportional to 18,639.09, 25,720.88 and 10,255.59

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Solution

The fourth proportional to 18,639.09, 25,720.88 and 10,255.59 is: 14,152.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.09 : 25,720.88 = 10,255.59 : x
  2. Step 2: Convert to fraction form
    18,639.09/25,720.88 = 10,255.59/x
  3. Step 3: Cross multiply
    18,639.09x = 25,720.88 × 10,255.59
  4. Step 4: Simplify right side
    18,639.09x = 263,782,748.44
  5. Step 5: Solve for x
    x = 263,782,748.44/18,639.09
  6. Step 6: Final answer
    x = 14,152.13

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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.