Home / 12,346.80-18,520.32-5,322.36

Finding the Fourth Proportional to 12,346.80, 18,520.32 and 5,322.36

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Solution

The fourth proportional to 12,346.80, 18,520.32 and 5,322.36 is: 7,983.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,346.80 : 18,520.32 = 5,322.36 : x
  2. Step 2: Convert to fraction form
    12,346.80/18,520.32 = 5,322.36/x
  3. Step 3: Cross multiply
    12,346.80x = 18,520.32 × 5,322.36
  4. Step 4: Simplify right side
    12,346.80x = 98,571,810.36
  5. Step 5: Solve for x
    x = 98,571,810.36/12,346.80
  6. Step 6: Final answer
    x = 7,983.59

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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.