Home / 17,155.36-25,711.85-10,128.25

Finding the Fourth Proportional to 17,155.36, 25,711.85 and 10,128.25

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Solution

The fourth proportional to 17,155.36, 25,711.85 and 10,128.25 is: 15,179.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,155.36 : 25,711.85 = 10,128.25 : x
  2. Step 2: Convert to fraction form
    17,155.36/25,711.85 = 10,128.25/x
  3. Step 3: Cross multiply
    17,155.36x = 25,711.85 × 10,128.25
  4. Step 4: Simplify right side
    17,155.36x = 260,415,994.12
  5. Step 5: Solve for x
    x = 260,415,994.12/17,155.36
  6. Step 6: Final answer
    x = 15,179.86

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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.