Home / 20,649.02-28,495.44-11,217.57

Finding the Fourth Proportional to 20,649.02, 28,495.44 and 11,217.57

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Solution

The fourth proportional to 20,649.02, 28,495.44 and 11,217.57 is: 15,480.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.02 : 28,495.44 = 11,217.57 : x
  2. Step 2: Convert to fraction form
    20,649.02/28,495.44 = 11,217.57/x
  3. Step 3: Cross multiply
    20,649.02x = 28,495.44 × 11,217.57
  4. Step 4: Simplify right side
    20,649.02x = 319,649,592.88
  5. Step 5: Solve for x
    x = 319,649,592.88/20,649.02
  6. Step 6: Final answer
    x = 15,480.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.