Home / 12,958.88-19,442.90-6,389.71

Finding the Fourth Proportional to 12,958.88, 19,442.90 and 6,389.71

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Solution

The fourth proportional to 12,958.88, 19,442.90 and 6,389.71 is: 9,586.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,958.88 : 19,442.90 = 6,389.71 : x
  2. Step 2: Convert to fraction form
    12,958.88/19,442.90 = 6,389.71/x
  3. Step 3: Cross multiply
    12,958.88x = 19,442.90 × 6,389.71
  4. Step 4: Simplify right side
    12,958.88x = 124,234,459.93
  5. Step 5: Solve for x
    x = 124,234,459.93/12,958.88
  6. Step 6: Final answer
    x = 9,586.82

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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.