Home / 13,178.80-19,756.72-5,382.64

Finding the Fourth Proportional to 13,178.80, 19,756.72 and 5,382.64

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Solution

The fourth proportional to 13,178.80, 19,756.72 and 5,382.64 is: 8,069.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.80 : 19,756.72 = 5,382.64 : x
  2. Step 2: Convert to fraction form
    13,178.80/19,756.72 = 5,382.64/x
  3. Step 3: Cross multiply
    13,178.80x = 19,756.72 × 5,382.64
  4. Step 4: Simplify right side
    13,178.80x = 106,343,311.34
  5. Step 5: Solve for x
    x = 106,343,311.34/13,178.80
  6. Step 6: Final answer
    x = 8,069.27

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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.