Home / 13,178.80-19,751.12-9,865.92

Finding the Fourth Proportional to 13,178.80, 19,751.12 and 9,865.92

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Solution

The fourth proportional to 13,178.80, 19,751.12 and 9,865.92 is: 14,786.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.80 : 19,751.12 = 9,865.92 : x
  2. Step 2: Convert to fraction form
    13,178.80/19,751.12 = 9,865.92/x
  3. Step 3: Cross multiply
    13,178.80x = 19,751.12 × 9,865.92
  4. Step 4: Simplify right side
    13,178.80x = 194,862,969.83
  5. Step 5: Solve for x
    x = 194,862,969.83/13,178.80
  6. Step 6: Final answer
    x = 14,786.09

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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.