Home / 11,821.32-16,320.42-10,509.24

Finding the Fourth Proportional to 11,821.32, 16,320.42 and 10,509.24

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Solution

The fourth proportional to 11,821.32, 16,320.42 and 10,509.24 is: 14,508.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.32 : 16,320.42 = 10,509.24 : x
  2. Step 2: Convert to fraction form
    11,821.32/16,320.42 = 10,509.24/x
  3. Step 3: Cross multiply
    11,821.32x = 16,320.42 × 10,509.24
  4. Step 4: Simplify right side
    11,821.32x = 171,515,210.68
  5. Step 5: Solve for x
    x = 171,515,210.68/11,821.32
  6. Step 6: Final answer
    x = 14,508.97

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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.