Home / 37,388.56-56,070.68-12,421.90

Finding the Fourth Proportional to 37,388.56, 56,070.68 and 12,421.90

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Solution

The fourth proportional to 37,388.56, 56,070.68 and 12,421.90 is: 18,628.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,388.56 : 56,070.68 = 12,421.90 : x
  2. Step 2: Convert to fraction form
    37,388.56/56,070.68 = 12,421.90/x
  3. Step 3: Cross multiply
    37,388.56x = 56,070.68 × 12,421.90
  4. Step 4: Simplify right side
    37,388.56x = 696,504,379.89
  5. Step 5: Solve for x
    x = 696,504,379.89/37,388.56
  6. Step 6: Final answer
    x = 18,628.81

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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.