Home / 14,421.12-21,628.44-5,187.12

Finding the Fourth Proportional to 14,421.12, 21,628.44 and 5,187.12

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Solution

The fourth proportional to 14,421.12, 21,628.44 and 5,187.12 is: 7,779.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.12 : 21,628.44 = 5,187.12 : x
  2. Step 2: Convert to fraction form
    14,421.12/21,628.44 = 5,187.12/x
  3. Step 3: Cross multiply
    14,421.12x = 21,628.44 × 5,187.12
  4. Step 4: Simplify right side
    14,421.12x = 112,189,313.69
  5. Step 5: Solve for x
    x = 112,189,313.69/14,421.12
  6. Step 6: Final answer
    x = 7,779.51

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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.