Home / 12,590.64-18,885.96-4,270.68

Finding the Fourth Proportional to 12,590.64, 18,885.96 and 4,270.68

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Solution

The fourth proportional to 12,590.64, 18,885.96 and 4,270.68 is: 6,406.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.64 : 18,885.96 = 4,270.68 : x
  2. Step 2: Convert to fraction form
    12,590.64/18,885.96 = 4,270.68/x
  3. Step 3: Cross multiply
    12,590.64x = 18,885.96 × 4,270.68
  4. Step 4: Simplify right side
    12,590.64x = 80,655,891.65
  5. Step 5: Solve for x
    x = 80,655,891.65/12,590.64
  6. Step 6: Final answer
    x = 6,406.02

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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.