Home / 10,265.48-15,389.10-3,689.90

Finding the Fourth Proportional to 10,265.48, 15,389.10 and 3,689.90

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Solution

The fourth proportional to 10,265.48, 15,389.10 and 3,689.90 is: 5,531.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,265.48 : 15,389.10 = 3,689.90 : x
  2. Step 2: Convert to fraction form
    10,265.48/15,389.10 = 3,689.90/x
  3. Step 3: Cross multiply
    10,265.48x = 15,389.10 × 3,689.90
  4. Step 4: Simplify right side
    10,265.48x = 56,784,163.14
  5. Step 5: Solve for x
    x = 56,784,163.14/10,265.48
  6. Step 6: Final answer
    x = 5,531.57

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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.