Home / 18,329.40-27,475.20-9,991.80

Finding the Fourth Proportional to 18,329.40, 27,475.20 and 9,991.80

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Solution

The fourth proportional to 18,329.40, 27,475.20 and 9,991.80 is: 14,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329.40 : 27,475.20 = 9,991.80 : x
  2. Step 2: Convert to fraction form
    18,329.40/27,475.20 = 9,991.80/x
  3. Step 3: Cross multiply
    18,329.40x = 27,475.20 × 9,991.80
  4. Step 4: Simplify right side
    18,329.40x = 274,526,703.36
  5. Step 5: Solve for x
    x = 274,526,703.36/18,329.40
  6. Step 6: Final answer
    x = 14,977.40

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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.