Home / 13,372.09-20,046.84-8,430.83

Finding the Fourth Proportional to 13,372.09, 20,046.84 and 8,430.83

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Solution

The fourth proportional to 13,372.09, 20,046.84 and 8,430.83 is: 12,639.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.09 : 20,046.84 = 8,430.83 : x
  2. Step 2: Convert to fraction form
    13,372.09/20,046.84 = 8,430.83/x
  3. Step 3: Cross multiply
    13,372.09x = 20,046.84 × 8,430.83
  4. Step 4: Simplify right side
    13,372.09x = 169,011,603.59
  5. Step 5: Solve for x
    x = 169,011,603.59/13,372.09
  6. Step 6: Final answer
    x = 12,639.13

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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.