Home / 12,926.50-19,389.90-4,161.40

Finding the Fourth Proportional to 12,926.50, 19,389.90 and 4,161.40

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Solution

The fourth proportional to 12,926.50, 19,389.90 and 4,161.40 is: 6,242.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,926.50 : 19,389.90 = 4,161.40 : x
  2. Step 2: Convert to fraction form
    12,926.50/19,389.90 = 4,161.40/x
  3. Step 3: Cross multiply
    12,926.50x = 19,389.90 × 4,161.40
  4. Step 4: Simplify right side
    12,926.50x = 80,689,129.86
  5. Step 5: Solve for x
    x = 80,689,129.86/12,926.50
  6. Step 6: Final answer
    x = 6,242.15

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.