Home / 13,253.21-19,879.79-3,392.47

Finding the Fourth Proportional to 13,253.21, 19,879.79 and 3,392.47

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Solution

The fourth proportional to 13,253.21, 19,879.79 and 3,392.47 is: 5,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.21 : 19,879.79 = 3,392.47 : x
  2. Step 2: Convert to fraction form
    13,253.21/19,879.79 = 3,392.47/x
  3. Step 3: Cross multiply
    13,253.21x = 19,879.79 × 3,392.47
  4. Step 4: Simplify right side
    13,253.21x = 67,441,549.96
  5. Step 5: Solve for x
    x = 67,441,549.96/13,253.21
  6. Step 6: Final answer
    x = 5,088.70

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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.