Home / 14,223.55-21,338.07-5,457.78

Finding the Fourth Proportional to 14,223.55, 21,338.07 and 5,457.78

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Solution

The fourth proportional to 14,223.55, 21,338.07 and 5,457.78 is: 8,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,223.55 : 21,338.07 = 5,457.78 : x
  2. Step 2: Convert to fraction form
    14,223.55/21,338.07 = 5,457.78/x
  3. Step 3: Cross multiply
    14,223.55x = 21,338.07 × 5,457.78
  4. Step 4: Simplify right side
    14,223.55x = 116,458,491.68
  5. Step 5: Solve for x
    x = 116,458,491.68/14,223.55
  6. Step 6: Final answer
    x = 8,187.72

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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.