Home / 13,457.34-20,180.49-7,921.74

Finding the Fourth Proportional to 13,457.34, 20,180.49 and 7,921.74

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Solution

The fourth proportional to 13,457.34, 20,180.49 and 7,921.74 is: 11,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.34 : 20,180.49 = 7,921.74 : x
  2. Step 2: Convert to fraction form
    13,457.34/20,180.49 = 7,921.74/x
  3. Step 3: Cross multiply
    13,457.34x = 20,180.49 × 7,921.74
  4. Step 4: Simplify right side
    13,457.34x = 159,864,594.85
  5. Step 5: Solve for x
    x = 159,864,594.85/13,457.34
  6. Step 6: Final answer
    x = 11,879.36

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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.