Home / 13,642.08-20,463.36-4,879.20

Finding the Fourth Proportional to 13,642.08, 20,463.36 and 4,879.20

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Solution

The fourth proportional to 13,642.08, 20,463.36 and 4,879.20 is: 7,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.08 : 20,463.36 = 4,879.20 : x
  2. Step 2: Convert to fraction form
    13,642.08/20,463.36 = 4,879.20/x
  3. Step 3: Cross multiply
    13,642.08x = 20,463.36 × 4,879.20
  4. Step 4: Simplify right side
    13,642.08x = 99,844,826.11
  5. Step 5: Solve for x
    x = 99,844,826.11/13,642.08
  6. Step 6: Final answer
    x = 7,318.89

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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.