Home / 28,649.36-42,989.70-11,119.88

Finding the Fourth Proportional to 28,649.36, 42,989.70 and 11,119.88

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Solution

The fourth proportional to 28,649.36, 42,989.70 and 11,119.88 is: 16,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.36 : 42,989.70 = 11,119.88 : x
  2. Step 2: Convert to fraction form
    28,649.36/42,989.70 = 11,119.88/x
  3. Step 3: Cross multiply
    28,649.36x = 42,989.70 × 11,119.88
  4. Step 4: Simplify right side
    28,649.36x = 478,040,305.24
  5. Step 5: Solve for x
    x = 478,040,305.24/28,649.36
  6. Step 6: Final answer
    x = 16,685.90

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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.