Home / 28,649.25-42,984.81-11,120.45

Finding the Fourth Proportional to 28,649.25, 42,984.81 and 11,120.45

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Solution

The fourth proportional to 28,649.25, 42,984.81 and 11,120.45 is: 16,684.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.25 : 42,984.81 = 11,120.45 : x
  2. Step 2: Convert to fraction form
    28,649.25/42,984.81 = 11,120.45/x
  3. Step 3: Cross multiply
    28,649.25x = 42,984.81 × 11,120.45
  4. Step 4: Simplify right side
    28,649.25x = 478,010,215.44
  5. Step 5: Solve for x
    x = 478,010,215.44/28,649.25
  6. Step 6: Final answer
    x = 16,684.91

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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.