Home / 18,765.36-28,148.10-7,525.80

Finding the Fourth Proportional to 18,765.36, 28,148.10 and 7,525.80

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Solution

The fourth proportional to 18,765.36, 28,148.10 and 7,525.80 is: 11,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.36 : 28,148.10 = 7,525.80 : x
  2. Step 2: Convert to fraction form
    18,765.36/28,148.10 = 7,525.80/x
  3. Step 3: Cross multiply
    18,765.36x = 28,148.10 × 7,525.80
  4. Step 4: Simplify right side
    18,765.36x = 211,836,970.98
  5. Step 5: Solve for x
    x = 211,836,970.98/18,765.36
  6. Step 6: Final answer
    x = 11,288.72

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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.