Home / 10,531.21-15,783.11-4,283.94

Finding the Fourth Proportional to 10,531.21, 15,783.11 and 4,283.94

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Solution

The fourth proportional to 10,531.21, 15,783.11 and 4,283.94 is: 6,420.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,531.21 : 15,783.11 = 4,283.94 : x
  2. Step 2: Convert to fraction form
    10,531.21/15,783.11 = 4,283.94/x
  3. Step 3: Cross multiply
    10,531.21x = 15,783.11 × 4,283.94
  4. Step 4: Simplify right side
    10,531.21x = 67,613,896.25
  5. Step 5: Solve for x
    x = 67,613,896.25/10,531.21
  6. Step 6: Final answer
    x = 6,420.34

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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.