Home / 16,821.72-25,260.72-10,511.28

Finding the Fourth Proportional to 16,821.72, 25,260.72 and 10,511.28

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Solution

The fourth proportional to 16,821.72, 25,260.72 and 10,511.28 is: 15,784.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.72 : 25,260.72 = 10,511.28 : x
  2. Step 2: Convert to fraction form
    16,821.72/25,260.72 = 10,511.28/x
  3. Step 3: Cross multiply
    16,821.72x = 25,260.72 × 10,511.28
  4. Step 4: Simplify right side
    16,821.72x = 265,522,500.92
  5. Step 5: Solve for x
    x = 265,522,500.92/16,821.72
  6. Step 6: Final answer
    x = 15,784.50

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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.