Home / 10,148.52-15,222.87-3,128.46

Finding the Fourth Proportional to 10,148.52, 15,222.87 and 3,128.46

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Solution

The fourth proportional to 10,148.52, 15,222.87 and 3,128.46 is: 4,692.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,148.52 : 15,222.87 = 3,128.46 : x
  2. Step 2: Convert to fraction form
    10,148.52/15,222.87 = 3,128.46/x
  3. Step 3: Cross multiply
    10,148.52x = 15,222.87 × 3,128.46
  4. Step 4: Simplify right side
    10,148.52x = 47,624,139.88
  5. Step 5: Solve for x
    x = 47,624,139.88/10,148.52
  6. Step 6: Final answer
    x = 4,692.72

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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.