Home / 14,218.64-21,331.20-5,457.68

Finding the Fourth Proportional to 14,218.64, 21,331.20 and 5,457.68

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Solution

The fourth proportional to 14,218.64, 21,331.20 and 5,457.68 is: 8,187.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.64 : 21,331.20 = 5,457.68 : x
  2. Step 2: Convert to fraction form
    14,218.64/21,331.20 = 5,457.68/x
  3. Step 3: Cross multiply
    14,218.64x = 21,331.20 × 5,457.68
  4. Step 4: Simplify right side
    14,218.64x = 116,418,863.62
  5. Step 5: Solve for x
    x = 116,418,863.62/14,218.64
  6. Step 6: Final answer
    x = 8,187.76

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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.