Home / 28,137.99-42,191.41-11,509.70

Finding the Fourth Proportional to 28,137.99, 42,191.41 and 11,509.70

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Solution

The fourth proportional to 28,137.99, 42,191.41 and 11,509.70 is: 17,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.99 : 42,191.41 = 11,509.70 : x
  2. Step 2: Convert to fraction form
    28,137.99/42,191.41 = 11,509.70/x
  3. Step 3: Cross multiply
    28,137.99x = 42,191.41 × 11,509.70
  4. Step 4: Simplify right side
    28,137.99x = 485,610,471.68
  5. Step 5: Solve for x
    x = 485,610,471.68/28,137.99
  6. Step 6: Final answer
    x = 17,258.18

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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.