Home / 10,389.18-15,583.24-3,814.86

Finding the Fourth Proportional to 10,389.18, 15,583.24 and 3,814.86

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Solution

The fourth proportional to 10,389.18, 15,583.24 and 3,814.86 is: 5,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.18 : 15,583.24 = 3,814.86 : x
  2. Step 2: Convert to fraction form
    10,389.18/15,583.24 = 3,814.86/x
  3. Step 3: Cross multiply
    10,389.18x = 15,583.24 × 3,814.86
  4. Step 4: Simplify right side
    10,389.18x = 59,447,878.95
  5. Step 5: Solve for x
    x = 59,447,878.95/10,389.18
  6. Step 6: Final answer
    x = 5,722.10

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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.