Home / 25,139.80-37,644.90-18,530.20

Finding the Fourth Proportional to 25,139.80, 37,644.90 and 18,530.20

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Solution

The fourth proportional to 25,139.80, 37,644.90 and 18,530.20 is: 27,747.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,139.80 : 37,644.90 = 18,530.20 : x
  2. Step 2: Convert to fraction form
    25,139.80/37,644.90 = 18,530.20/x
  3. Step 3: Cross multiply
    25,139.80x = 37,644.90 × 18,530.20
  4. Step 4: Simplify right side
    25,139.80x = 697,567,525.98
  5. Step 5: Solve for x
    x = 697,567,525.98/25,139.80
  6. Step 6: Final answer
    x = 27,747.54

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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.