Home / 25,720.48-38,578.72-10,138.24

Finding the Fourth Proportional to 25,720.48, 38,578.72 and 10,138.24

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Solution

The fourth proportional to 25,720.48, 38,578.72 and 10,138.24 is: 15,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,720.48 : 38,578.72 = 10,138.24 : x
  2. Step 2: Convert to fraction form
    25,720.48/38,578.72 = 10,138.24/x
  3. Step 3: Cross multiply
    25,720.48x = 38,578.72 × 10,138.24
  4. Step 4: Simplify right side
    25,720.48x = 391,120,322.25
  5. Step 5: Solve for x
    x = 391,120,322.25/25,720.48
  6. Step 6: Final answer
    x = 15,206.57

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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.