Home / 13,775.92-20,655.66-5,457.12

Finding the Fourth Proportional to 13,775.92, 20,655.66 and 5,457.12

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Solution

The fourth proportional to 13,775.92, 20,655.66 and 5,457.12 is: 8,182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.92 : 20,655.66 = 5,457.12 : x
  2. Step 2: Convert to fraction form
    13,775.92/20,655.66 = 5,457.12/x
  3. Step 3: Cross multiply
    13,775.92x = 20,655.66 × 5,457.12
  4. Step 4: Simplify right side
    13,775.92x = 112,720,415.30
  5. Step 5: Solve for x
    x = 112,720,415.30/13,775.92
  6. Step 6: Final answer
    x = 8,182.42

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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.