Home / 10,439.40-15,651.64-4,889.68

Finding the Fourth Proportional to 10,439.40, 15,651.64 and 4,889.68

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Solution

The fourth proportional to 10,439.40, 15,651.64 and 4,889.68 is: 7,331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.40 : 15,651.64 = 4,889.68 : x
  2. Step 2: Convert to fraction form
    10,439.40/15,651.64 = 4,889.68/x
  3. Step 3: Cross multiply
    10,439.40x = 15,651.64 × 4,889.68
  4. Step 4: Simplify right side
    10,439.40x = 76,531,511.08
  5. Step 5: Solve for x
    x = 76,531,511.08/10,439.40
  6. Step 6: Final answer
    x = 7,331.03

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1.5x scale

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.