Home / 11,143.18-16,688.19-6,453.28

Finding the Fourth Proportional to 11,143.18, 16,688.19 and 6,453.28

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Solution

The fourth proportional to 11,143.18, 16,688.19 and 6,453.28 is: 9,664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.18 : 16,688.19 = 6,453.28 : x
  2. Step 2: Convert to fraction form
    11,143.18/16,688.19 = 6,453.28/x
  3. Step 3: Cross multiply
    11,143.18x = 16,688.19 × 6,453.28
  4. Step 4: Simplify right side
    11,143.18x = 107,693,479.32
  5. Step 5: Solve for x
    x = 107,693,479.32/11,143.18
  6. Step 6: Final answer
    x = 9,664.52

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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.