Home / 10,439.05-15,649.80-4,889.47

Finding the Fourth Proportional to 10,439.05, 15,649.80 and 4,889.47

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Solution

The fourth proportional to 10,439.05, 15,649.80 and 4,889.47 is: 7,330.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.05 : 15,649.80 = 4,889.47 : x
  2. Step 2: Convert to fraction form
    10,439.05/15,649.80 = 4,889.47/x
  3. Step 3: Cross multiply
    10,439.05x = 15,649.80 × 4,889.47
  4. Step 4: Simplify right side
    10,439.05x = 76,519,227.61
  5. Step 5: Solve for x
    x = 76,519,227.61/10,439.05
  6. Step 6: Final answer
    x = 7,330.09

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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.