Home / 13,426.80-18,529.20-7,458.54

Finding the Fourth Proportional to 13,426.80, 18,529.20 and 7,458.54

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Solution

The fourth proportional to 13,426.80, 18,529.20 and 7,458.54 is: 10,292.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.80 : 18,529.20 = 7,458.54 : x
  2. Step 2: Convert to fraction form
    13,426.80/18,529.20 = 7,458.54/x
  3. Step 3: Cross multiply
    13,426.80x = 18,529.20 × 7,458.54
  4. Step 4: Simplify right side
    13,426.80x = 138,200,779.37
  5. Step 5: Solve for x
    x = 138,200,779.37/13,426.80
  6. Step 6: Final answer
    x = 10,292.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.