Home / 12,520.31-18,786.93-5,505.24

Finding the Fourth Proportional to 12,520.31, 18,786.93 and 5,505.24

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Solution

The fourth proportional to 12,520.31, 18,786.93 and 5,505.24 is: 8,260.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.31 : 18,786.93 = 5,505.24 : x
  2. Step 2: Convert to fraction form
    12,520.31/18,786.93 = 5,505.24/x
  3. Step 3: Cross multiply
    12,520.31x = 18,786.93 × 5,505.24
  4. Step 4: Simplify right side
    12,520.31x = 103,426,558.51
  5. Step 5: Solve for x
    x = 103,426,558.51/12,520.31
  6. Step 6: Final answer
    x = 8,260.70

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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.