Home / 10,420.42-15,631.84-4,182.60

Finding the Fourth Proportional to 10,420.42, 15,631.84 and 4,182.60

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Solution

The fourth proportional to 10,420.42, 15,631.84 and 4,182.60 is: 6,274.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.42 : 15,631.84 = 4,182.60 : x
  2. Step 2: Convert to fraction form
    10,420.42/15,631.84 = 4,182.60/x
  3. Step 3: Cross multiply
    10,420.42x = 15,631.84 × 4,182.60
  4. Step 4: Simplify right side
    10,420.42x = 65,381,733.98
  5. Step 5: Solve for x
    x = 65,381,733.98/10,420.42
  6. Step 6: Final answer
    x = 6,274.39

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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.